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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Cash flows from continuing operating activities      
Net income (loss) $ (29,217) $ 112,168 $ (34,765)
Adjustments to reconcile net income (loss) to net cash provided (used) by continuing operating activities:      
Income from discontinued operations, net of taxes (1,076) (200,301) (11,381)
Deferred income taxes (40,445) (42,013) (27,436)
Loss on extinguishment of debt   8,703  
Impairments of long-lived assets and goodwill   1,621 43,188
Depreciation, depletion and amortization of property, plant and equipment 66,996 59,354 35,930
Amortization of intangible and other assets 2,147 1,940 1,530
Loss on sales of businesses and other property and equipment 6,977 356 11
Stock-based compensation 5,213 3,992 1,639
Other 434 4,471 1,372
Cash provided (used) by changes in assets and liabilities (net of effects of discontinued operations):      
Accounts receivable (6,321) (6) 3,677
Inventories 56 1,372 (468)
Prepaid insurance 635 (2,296) 2,500
Prepaid and accrued income taxes (543) 5,619 906
Other supplies, prepaid items and other (2,231) 167 (3,717)
Accounts payable 1,374 16,632 (10,825)
Accrued interest (1) (2,305) (709)
Customer deposits (1,035) 376 (3,433)
Other current and noncurrent liabilities (687) 8,112 (2,799)
Net cash provided (used) by continuing operating activities 2,276 (22,038) (4,780)
Cash flows from continuing investing activities      
Expenditures for property, plant and equipment (35,425) (212,543) (438,944)
Net proceeds from sale of discontinued operations   356,704  
Proceeds from sales of businesses and other property and equipment 23,841 5,259 87
Proceeds from short-term investments     39,500
Purchases of short-term investments     (25,000)
Proceeds from current and noncurrent restricted cash and cash equivalents   186,935 45,969
Deposits of current and noncurrent restricted cash and cash equivalents   (186,935)  
Proceeds from noncurrent restricted investments     25,000
Other investing activities 739 3,877 2,709
Net cash provided (used) by continuing investing activities (10,845) 153,297 (350,679)
Cash flows from continuing financing activities      
Proceeds from revolving debt facility   76,516 47,438
Payments on revolving debt facility   (76,516) (47,438)
Payments on senior secured notes   (100,000)  
Proceeds from other long-term debt, net of fees   14,751 31,047
Payments on other long-term debt (14,121) (15,402) (12,923)
Payments of debt modification and issuance costs (90) (7,332) (1,200)
Payments of debt extinguishment costs   (4,938)  
Proceeds from loans secured by cash value of life insurance policies     1,288
Proceeds from short-term financing 10,919 11,161 10,273
Payments on short-term financing (11,479) (11,392) (12,399)
Proceeds from issuance of redeemable preferred stocks, net of discount and fees     180,013
Redemption of preferred stock   (71,966)  
Proceeds from issuance of common stock warrants, net of discount and fees     21,018
Payments of issuance costs relating to preferred stocks and warrants   (785) (2,472)
Proceeds from exercises of stock options   371 1,785
Taxes paid on equity awards (1,361) (149)  
Dividends paid on preferred stocks   (8,028) (300)
Net cash provided (used) by continuing financing activities (16,132) (193,709) 264,019
Cash flows of discontinued operations:      
Net cash provided (used) by operating activities (1,461) (1,363) 38,313
Net cash used by investing activities   (1,025) (3,382)
Net cash provided (used) by financing activities (236) (2,340) (1,292)
Net cash provided (used) by discontinued operations (1,697) (4,728) 33,639
Net decrease in cash and cash equivalents (26,398) (67,178) (57,801)
Cash and cash equivalents at beginning of year 60,017 127,195 184,996
Cash and cash equivalents at end of year $ 33,619 $ 60,017 127,195
12% Senior Secured Notes [Member]      
Cash flows from continuing financing activities      
Proceeds from senior secured notes, net of pay off of secured term loan, discount and fees     $ 47,889