Quarterly report pursuant to Section 13 or 15(d)

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

v3.8.0.1
Parent, Guarantor, Non-Guarantor Unaudited Consolidating Condensed Financial Statements - Consolidating Condensed Statement of Operations (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Condensed Financial Statements [Line Items]    
Revenues $ 109,675 $ 98,271
Operating expenses 91,534 85,814
Depreciation and amortization 28,549 32,202
Total operating gross margin (loss) (10,408) (19,745)
General and administrative expense (6,201) (7,040)
Gain (loss) on disposition of assets, net 343 (352)
Total operating income (loss) (16,266) (27,137)
Other income (expense):    
Interest expense (11,240) (10,870)
Interest income 23 10
Other 291 530
Equity in net earnings of subsidiaries 0 0
Total other income (expense) (10,926) (10,330)
Income (loss) before income taxes (27,192) (37,467)
Income tax expense (benefit) 1,604 2,342
Net income (loss) (28,796) (39,809)
Less: Mandatory convertible preferred stock dividend 906 0
Net income (loss) available to common stockholders (29,702) (39,809)
Reportable Legal Entities | Parent    
Condensed Financial Statements [Line Items]    
Revenues 0 0
Operating expenses 0 0
Depreciation and amortization 0 0
Total operating gross margin (loss) 0 0
General and administrative expense (89) (78)
Gain (loss) on disposition of assets, net 0 0
Total operating income (loss) (89) (78)
Other income (expense):    
Interest expense (12,228) (11,669)
Interest income 182 149
Other 0 0
Equity in net earnings of subsidiaries (16,372) (21,780)
Total other income (expense) (28,418) (33,300)
Income (loss) before income taxes (28,507) (33,378)
Income tax expense (benefit) 288 6,430
Net income (loss) (28,795) (39,808)
Less: Mandatory convertible preferred stock dividend 906 0
Net income (loss) available to common stockholders (29,701) (39,808)
Reportable Legal Entities | Guarantor    
Condensed Financial Statements [Line Items]    
Revenues 42,591 27,893
Operating expenses 25,817 20,950
Depreciation and amortization 19,996 21,188
Total operating gross margin (loss) (3,222) (14,245)
General and administrative expense (5,983) (6,870)
Gain (loss) on disposition of assets, net 11 (216)
Total operating income (loss) (9,194) (21,331)
Other income (expense):    
Interest expense 223 (45)
Interest income 181 179
Other 2 32
Equity in net earnings of subsidiaries 0 0
Total other income (expense) 406 166
Income (loss) before income taxes (8,788) (21,165)
Income tax expense (benefit) 329 (5,577)
Net income (loss) (9,117) (15,588)
Less: Mandatory convertible preferred stock dividend 0 0
Net income (loss) available to common stockholders (9,117) (15,588)
Reportable Legal Entities | Non-Guarantor    
Condensed Financial Statements [Line Items]    
Revenues 81,622 88,237
Operating expenses 80,255 82,723
Depreciation and amortization 8,553 11,014
Total operating gross margin (loss) (7,186) (5,500)
General and administrative expense (129) (92)
Gain (loss) on disposition of assets, net 332 (136)
Total operating income (loss) (6,983) (5,728)
Other income (expense):    
Interest expense (2,056) (1,942)
Interest income 2,481 2,468
Other 289 498
Equity in net earnings of subsidiaries 0 0
Total other income (expense) 714 1,024
Income (loss) before income taxes (6,269) (4,704)
Income tax expense (benefit) 987 1,489
Net income (loss) (7,256) (6,193)
Less: Mandatory convertible preferred stock dividend 0 0
Net income (loss) available to common stockholders (7,256) (6,193)
Eliminations    
Condensed Financial Statements [Line Items]    
Revenues (14,538) (17,859)
Operating expenses (14,538) (17,859)
Depreciation and amortization 0 0
Total operating gross margin (loss) 0 0
General and administrative expense 0 0
Gain (loss) on disposition of assets, net 0 0
Total operating income (loss) 0 0
Other income (expense):    
Interest expense 2,821 2,786
Interest income (2,821) (2,786)
Other 0 0
Equity in net earnings of subsidiaries 16,372 21,780
Total other income (expense) 16,372 21,780
Income (loss) before income taxes 16,372 21,780
Income tax expense (benefit) 0 0
Net income (loss) 16,372 21,780
Less: Mandatory convertible preferred stock dividend 0
Net income (loss) available to common stockholders $ 16,372 $ 21,780