Quarterly report pursuant to Section 13 or 15(d)

Parent, Guarantor, Non-Guarantor Unaudited Consolidating Condensed Financial Statements - Consolidating Condensed Statement of Operations (Detail)

v2.4.0.8
Parent, Guarantor, Non-Guarantor Unaudited Consolidating Condensed Financial Statements - Consolidating Condensed Statement of Operations (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Condensed Financial Statements [Line Items]    
Total revenues $ 229,225 $ 167,135
Operating expenses 166,025 116,746
Depreciation and amortization 34,337 29,512
Total operating gross margin 28,863 20,877
General and administration expense (8,964) [1] (12,845) [1]
Gain (loss) on disposition of assets, net (129) 1,148
Total operating income (loss) 19,770 9,180
Other income and (expense):    
Interest expense (12,039) (10,006)
Interest income 32 59
Loss on extinguishment of debt (29,673) 0
Other 895 (165)
Equity in net earnings of subsidiaries 0 0
Total other expense (40,785) (10,112)
Income (benefit) before income taxes (21,015) (932)
Income tax benefit (8,623) (1,504)
Net income (12,392) 572
Less: Net income (loss) attributable to noncontrolling interest 157 (20)
Net income (12,549) 592
Parent [Member]
    
Condensed Financial Statements [Line Items]    
Total revenues 0 0
Operating expenses 0 0
Depreciation and amortization 0 0
Total operating gross margin 0 0
General and administration expense (70) [1] (45) [1]
Gain (loss) on disposition of assets, net (79) 0
Total operating income (loss) (149) (45)
Other income and (expense):    
Interest expense (12,715) (10,980)
Interest income 439 1,569
Loss on extinguishment of debt (29,673) 0
Other 0 37
Equity in net earnings of subsidiaries 10,489 179
Total other expense (31,460) (9,195)
Income (benefit) before income taxes (31,609) (9,240)
Income tax benefit (19,060) (9,832)
Net income (12,549) 592
Less: Net income (loss) attributable to noncontrolling interest 0 0
Net income (12,549) 592
Guarantor [Member]
    
Condensed Financial Statements [Line Items]    
Total revenues 123,431 104,342
Operating expenses 76,548 58,578
Depreciation and amortization 20,168 18,659
Total operating gross margin 26,715 27,105
General and administration expense (8,464) [1] (12,732) [1]
Gain (loss) on disposition of assets, net (81) 1,108
Total operating income (loss) 18,170 15,481
Other income and (expense):    
Interest expense (50) (24)
Interest income 176 190
Loss on extinguishment of debt 0 0
Other 128 101
Equity in net earnings of subsidiaries 0 0
Total other expense 254 267
Income (benefit) before income taxes 18,424 15,748
Income tax benefit 6,384 5,589
Net income 12,040 10,159
Less: Net income (loss) attributable to noncontrolling interest 0 0
Net income 12,040 10,159
Non-Guarantor [Member]
    
Condensed Financial Statements [Line Items]    
Total revenues 149,132 86,300
Operating expenses 132,815 81,675
Depreciation and amortization 14,169 10,853
Total operating gross margin 2,148 (6,228)
General and administration expense (430) [1] (68) [1]
Gain (loss) on disposition of assets, net 31 40
Total operating income (loss) 1,749 (6,256)
Other income and (expense):    
Interest expense (2,499) (3,417)
Interest income 2,642 2,715
Loss on extinguishment of debt 0 0
Other 767 (303)
Equity in net earnings of subsidiaries 0 0
Total other expense 910 (1,005)
Income (benefit) before income taxes 2,659 (7,261)
Income tax benefit 4,053 2,739
Net income (1,394) (10,000)
Less: Net income (loss) attributable to noncontrolling interest 157 (20)
Net income (1,551) (9,980)
Eliminations [Member]
    
Condensed Financial Statements [Line Items]    
Total revenues (43,338) (23,507)
Operating expenses (43,338) (23,507)
Depreciation and amortization 0 0
Total operating gross margin 0 0
General and administration expense 0 [1] 0 [1]
Gain (loss) on disposition of assets, net 0 0
Total operating income (loss) 0 0
Other income and (expense):    
Interest expense 3,225 4,415
Interest income (3,225) (4,415)
Loss on extinguishment of debt 0 0
Other 0 0
Equity in net earnings of subsidiaries (10,489) (179)
Total other expense (10,489) (179)
Income (benefit) before income taxes (10,489) (179)
Income tax benefit 0 0
Net income (10,489) (179)
Less: Net income (loss) attributable to noncontrolling interest 0 0
Net income $ (10,489) $ (179)
[1] 1) General and administration expenses for field operations are included in operating expenses.