Parent, Guarantor, Non-Guarantor Unaudited Consolidating Condensed Financial Statements - Consolidating Condensed Balance Sheet (Detail) - USD ($) $ in Thousands |
3 Months Ended |
|
|
Mar. 31, 2016 |
Mar. 31, 2015 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Condensed Financial Statements [Line Items] |
|
|
|
|
Revenues |
$ 130,503
|
$ 204,076
|
|
|
Current assets: |
|
|
|
|
Cash and cash equivalents |
108,427
|
113,199
|
$ 134,294
|
$ 108,456
|
Accounts and notes receivable, net |
175,382
|
|
175,105
|
|
Rig materials and supplies |
36,508
|
|
34,937
|
|
Other current assets |
24,438
|
|
22,405
|
|
Total current assets |
344,755
|
|
366,741
|
|
Intangible assets, net (Note 3) |
12,220
|
|
13,377
|
|
Goodwill (Note 3) |
6,708
|
|
6,708
|
|
Property, plant and equipment, net |
776,912
|
|
805,841
|
|
Investment in subsidiaries and intercompany advances |
0
|
|
0
|
|
Other Assets, Miscellaneous, Noncurrent |
114,054
|
|
|
|
Deferred Income Taxes and Other Assets, Noncurrent |
|
|
174,035
|
|
Total assets |
1,254,649
|
|
1,366,702
|
|
Current portion of long-term debt |
|
|
0
|
|
Accounts payable and accrued liabilities |
114,993
|
|
129,703
|
|
Accrued income taxes |
5,980
|
|
6,418
|
|
Liabilities, Current |
120,973
|
|
136,121
|
|
Long-term Debt, Excluding Current Maturities |
575,171
|
|
574,798
|
|
Other long-term liabilities |
13,755
|
|
18,617
|
|
Current liabilities: |
|
|
|
|
Long-term deferred tax liability |
71,898
|
|
68,654
|
|
Total liabilities |
781,797
|
|
798,190
|
|
Total equity |
472,852
|
|
568,512
|
|
Total liabilities and stockholders’ equity |
1,254,649
|
|
1,366,702
|
|
Intercompany Payables |
0
|
|
0
|
|
Common stock |
20,604
|
|
20,518
|
|
Capital in excess of par value |
670,245
|
|
669,120
|
|
Accumulated deficit |
(215,073)
|
|
(119,238)
|
|
Accumulated other comprehensive (loss) |
(2,924)
|
|
(1,888)
|
|
Stockholders' Equity Attributable to Parent |
472,852
|
|
568,512
|
|
Operating expenses |
108,117
|
139,270
|
|
|
Depreciation and amortization |
35,814
|
40,539
|
|
|
Total operating gross margin |
(13,428)
|
24,267
|
|
|
General and Administrative Expense |
9,781
|
10,837
|
|
|
Gain (loss) on disposition of assets, net |
(60)
|
2,441
|
|
|
Operating Income (Loss) |
(23,269)
|
15,871
|
|
|
Interest Expense |
11,562
|
11,078
|
|
|
Interest income |
7
|
183
|
|
|
Other |
2,485
|
(1,380)
|
|
|
Equity in net earnings of subsidiaries |
0
|
0
|
|
|
Nonoperating Income (Expense) |
(9,070)
|
(12,275)
|
|
|
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest |
(32,339)
|
3,596
|
|
|
Income tax expense (benefit) |
63,496
|
(182)
|
|
|
Deferred Income Tax Expense (Benefit) |
(63,411)
|
(6,304)
|
|
|
Net income (loss) |
(95,835)
|
3,778
|
|
|
Net Income (Loss) Attributable to Noncontrolling Interest |
0
|
556
|
|
|
Net Income (Loss) Attributable to Parent |
(95,835)
|
3,222
|
|
|
Parent [Member] |
|
|
|
|
Condensed Financial Statements [Line Items] |
|
|
|
|
Revenues |
0
|
0
|
|
|
Current assets: |
|
|
|
|
Cash and cash equivalents |
45,822
|
31,704
|
73,985
|
36,728
|
Accounts and notes receivable, net |
0
|
|
0
|
|
Rig materials and supplies |
0
|
|
0
|
|
Other current assets |
0
|
|
0
|
|
Total current assets |
45,822
|
|
73,985
|
|
Intangible assets, net (Note 3) |
0
|
|
0
|
|
Goodwill (Note 3) |
0
|
|
0
|
|
Property, plant and equipment, net |
(19)
|
|
(19)
|
|
Investment in subsidiaries and intercompany advances |
3,049,008
|
|
3,057,220
|
|
Other Assets, Miscellaneous, Noncurrent |
(225,185)
|
|
|
|
Deferred Income Taxes and Other Assets, Noncurrent |
|
|
(234,786)
|
|
Total assets |
2,869,626
|
|
2,896,400
|
|
Current portion of long-term debt |
|
|
0
|
|
Accounts payable and accrued liabilities |
104,789
|
|
84,456
|
|
Accrued income taxes |
20,216
|
|
9,900
|
|
Liabilities, Current |
125,005
|
|
94,356
|
|
Long-term Debt, Excluding Current Maturities |
575,171
|
|
574,798
|
|
Other long-term liabilities |
2,868
|
|
2,868
|
|
Current liabilities: |
|
|
|
|
Long-term deferred tax liability |
(29)
|
|
(29)
|
|
Total liabilities |
2,396,812
|
|
2,328,961
|
|
Total equity |
472,814
|
|
567,439
|
|
Total liabilities and stockholders’ equity |
2,869,626
|
|
2,896,400
|
|
Intercompany Payables |
1,693,797
|
|
1,656,968
|
|
Operating expenses |
0
|
0
|
|
|
Depreciation and amortization |
0
|
0
|
|
|
Total operating gross margin |
0
|
0
|
|
|
General and Administrative Expense |
87
|
112
|
|
|
Gain (loss) on disposition of assets, net |
0
|
0
|
|
|
Operating Income (Loss) |
(87)
|
(112)
|
|
|
Interest Expense |
11,857
|
11,059
|
|
|
Interest income |
204
|
417
|
|
|
Other |
0
|
0
|
|
|
Equity in net earnings of subsidiaries |
(16,225)
|
8,988
|
|
|
Nonoperating Income (Expense) |
(27,878)
|
(1,654)
|
|
|
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest |
(27,965)
|
(1,766)
|
|
|
Income tax expense (benefit) |
67,870
|
(4,988)
|
|
|
Deferred Income Tax Expense (Benefit) |
57,677
|
(7,932)
|
|
|
Net income (loss) |
(95,835)
|
3,222
|
|
|
Net Income (Loss) Attributable to Noncontrolling Interest |
0
|
0
|
|
|
Net Income (Loss) Attributable to Parent |
(95,835)
|
3,222
|
|
|
Guarantor [Member] |
|
|
|
|
Condensed Financial Statements [Line Items] |
|
|
|
|
Revenues |
47,382
|
79,395
|
|
|
Current assets: |
|
|
|
|
Cash and cash equivalents |
13,242
|
10,944
|
13,854
|
13,546
|
Accounts and notes receivable, net |
48,785
|
|
42,261
|
|
Rig materials and supplies |
(3,788)
|
|
(4,744)
|
|
Other current assets |
5,124
|
|
5,982
|
|
Total current assets |
63,363
|
|
57,353
|
|
Intangible assets, net (Note 3) |
11,164
|
|
11,740
|
|
Goodwill (Note 3) |
6,708
|
|
6,708
|
|
Property, plant and equipment, net |
521,959
|
|
543,346
|
|
Investment in subsidiaries and intercompany advances |
2,810,676
|
|
2,770,501
|
|
Other Assets, Miscellaneous, Noncurrent |
277,015
|
|
|
|
Deferred Income Taxes and Other Assets, Noncurrent |
|
|
312,790
|
|
Total assets |
3,690,885
|
|
3,702,438
|
|
Current portion of long-term debt |
|
|
0
|
|
Accounts payable and accrued liabilities |
55,216
|
|
56,382
|
|
Accrued income taxes |
(6,430)
|
|
2,111
|
|
Liabilities, Current |
48,786
|
|
58,493
|
|
Long-term Debt, Excluding Current Maturities |
0
|
|
0
|
|
Other long-term liabilities |
5,867
|
|
7,446
|
|
Current liabilities: |
|
|
|
|
Long-term deferred tax liability |
72,948
|
|
69,679
|
|
Total liabilities |
1,539,886
|
|
1,537,128
|
|
Total equity |
2,150,999
|
|
2,165,310
|
|
Total liabilities and stockholders’ equity |
3,690,885
|
|
3,702,438
|
|
Intercompany Payables |
1,412,285
|
|
1,401,510
|
|
Operating expenses |
32,835
|
44,145
|
|
|
Depreciation and amortization |
23,125
|
23,311
|
|
|
Total operating gross margin |
(8,578)
|
11,939
|
|
|
General and Administrative Expense |
9,613
|
10,115
|
|
|
Gain (loss) on disposition of assets, net |
(56)
|
52
|
|
|
Operating Income (Loss) |
(18,247)
|
1,876
|
|
|
Interest Expense |
437
|
17
|
|
|
Interest income |
179
|
3
|
|
|
Other |
485
|
10
|
|
|
Equity in net earnings of subsidiaries |
0
|
0
|
|
|
Nonoperating Income (Expense) |
227
|
(4)
|
|
|
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest |
(18,020)
|
1,872
|
|
|
Income tax expense (benefit) |
(3,707)
|
(447)
|
|
|
Deferred Income Tax Expense (Benefit) |
5,185
|
3,117
|
|
|
Net income (loss) |
(14,313)
|
2,319
|
|
|
Net Income (Loss) Attributable to Noncontrolling Interest |
0
|
0
|
|
|
Net Income (Loss) Attributable to Parent |
(14,313)
|
2,319
|
|
|
Non-Guarantor [Member] |
|
|
|
|
Condensed Financial Statements [Line Items] |
|
|
|
|
Revenues |
106,477
|
150,931
|
|
|
Current assets: |
|
|
|
|
Cash and cash equivalents |
49,363
|
70,551
|
46,455
|
58,182
|
Accounts and notes receivable, net |
126,597
|
|
132,844
|
|
Rig materials and supplies |
40,296
|
|
39,681
|
|
Other current assets |
19,314
|
|
16,423
|
|
Total current assets |
235,570
|
|
235,403
|
|
Intangible assets, net (Note 3) |
1,056
|
|
1,637
|
|
Goodwill (Note 3) |
0
|
|
0
|
|
Property, plant and equipment, net |
254,972
|
|
262,514
|
|
Investment in subsidiaries and intercompany advances |
3,439,433
|
|
3,319,702
|
|
Other Assets, Miscellaneous, Noncurrent |
543,011
|
|
|
|
Deferred Income Taxes and Other Assets, Noncurrent |
|
|
265,995
|
|
Total assets |
4,474,042
|
|
4,085,251
|
|
Current portion of long-term debt |
|
|
0
|
|
Accounts payable and accrued liabilities |
572,465
|
|
295,439
|
|
Accrued income taxes |
(7,806)
|
|
(5,593)
|
|
Liabilities, Current |
564,659
|
|
289,846
|
|
Long-term Debt, Excluding Current Maturities |
0
|
|
0
|
|
Other long-term liabilities |
5,020
|
|
8,303
|
|
Current liabilities: |
|
|
|
|
Long-term deferred tax liability |
(1,021)
|
|
(996)
|
|
Total liabilities |
2,531,430
|
|
2,161,824
|
|
Total equity |
1,942,612
|
|
1,923,427
|
|
Total liabilities and stockholders’ equity |
4,474,042
|
|
4,085,251
|
|
Intercompany Payables |
1,962,772
|
|
1,864,671
|
|
Operating expenses |
98,638
|
121,375
|
|
|
Depreciation and amortization |
12,689
|
17,228
|
|
|
Total operating gross margin |
(4,850)
|
12,328
|
|
|
General and Administrative Expense |
81
|
610
|
|
|
Gain (loss) on disposition of assets, net |
(4)
|
2,389
|
|
|
Operating Income (Loss) |
(4,935)
|
14,107
|
|
|
Interest Expense |
2,859
|
328
|
|
|
Interest income |
3,215
|
89
|
|
|
Other |
2,000
|
(1,390)
|
|
|
Equity in net earnings of subsidiaries |
0
|
0
|
|
|
Nonoperating Income (Expense) |
2,356
|
(1,629)
|
|
|
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest |
(2,579)
|
12,478
|
|
|
Income tax expense (benefit) |
(667)
|
5,253
|
|
|
Deferred Income Tax Expense (Benefit) |
549
|
(1,489)
|
|
|
Net income (loss) |
(1,912)
|
7,225
|
|
|
Net Income (Loss) Attributable to Noncontrolling Interest |
0
|
556
|
|
|
Net Income (Loss) Attributable to Parent |
(1,912)
|
6,669
|
|
|
Eliminations [Member] |
|
|
|
|
Condensed Financial Statements [Line Items] |
|
|
|
|
Revenues |
(23,356)
|
(26,250)
|
|
|
Current assets: |
|
|
|
|
Cash and cash equivalents |
0
|
0
|
0
|
$ 0
|
Accounts and notes receivable, net |
0
|
|
0
|
|
Rig materials and supplies |
0
|
|
0
|
|
Other current assets |
0
|
|
0
|
|
Total current assets |
0
|
|
0
|
|
Intangible assets, net (Note 3) |
0
|
|
0
|
|
Goodwill (Note 3) |
0
|
|
0
|
|
Property, plant and equipment, net |
0
|
|
0
|
|
Investment in subsidiaries and intercompany advances |
(9,299,117)
|
|
(9,147,423)
|
|
Other Assets, Miscellaneous, Noncurrent |
(480,787)
|
|
|
|
Deferred Income Taxes and Other Assets, Noncurrent |
|
|
(169,964)
|
|
Total assets |
(9,779,904)
|
|
(9,317,387)
|
|
Current portion of long-term debt |
|
|
0
|
|
Accounts payable and accrued liabilities |
(617,477)
|
|
(306,574)
|
|
Accrued income taxes |
0
|
|
0
|
|
Liabilities, Current |
(617,477)
|
|
(306,574)
|
|
Long-term Debt, Excluding Current Maturities |
0
|
|
0
|
|
Other long-term liabilities |
0
|
|
0
|
|
Current liabilities: |
|
|
|
|
Long-term deferred tax liability |
0
|
|
0
|
|
Total liabilities |
(5,686,331)
|
|
(5,229,723)
|
|
Total equity |
(4,093,573)
|
|
(4,087,664)
|
|
Total liabilities and stockholders’ equity |
(9,779,904)
|
|
(9,317,387)
|
|
Intercompany Payables |
(5,068,854)
|
|
$ (4,923,149)
|
|
Operating expenses |
(23,356)
|
(26,250)
|
|
|
Depreciation and amortization |
0
|
0
|
|
|
Total operating gross margin |
0
|
0
|
|
|
General and Administrative Expense |
0
|
0
|
|
|
Gain (loss) on disposition of assets, net |
0
|
0
|
|
|
Operating Income (Loss) |
0
|
0
|
|
|
Interest Expense |
(3,591)
|
(326)
|
|
|
Interest income |
(3,591)
|
(326)
|
|
|
Other |
0
|
0
|
|
|
Equity in net earnings of subsidiaries |
16,225
|
(8,988)
|
|
|
Nonoperating Income (Expense) |
16,225
|
(8,988)
|
|
|
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest |
16,225
|
(8,988)
|
|
|
Income tax expense (benefit) |
0
|
0
|
|
|
Deferred Income Tax Expense (Benefit) |
0
|
0
|
|
|
Net income (loss) |
16,225
|
(8,988)
|
|
|
Net Income (Loss) Attributable to Noncontrolling Interest |
0
|
0
|
|
|
Net Income (Loss) Attributable to Parent |
$ 16,225
|
$ (8,988)
|
|
|