FRESH START ACCOUNTING - Fresh Start Balance Sheet (Details) $ in Thousands	Dec. 15, 2016 USD ($)
Postconfirmation, Current Assets [Abstract]
Postconfirmation, Cash and Cash Equivalents	$ 91,188
Postconfirmation, Restricted Cash and Cash Equivalents, Current	24,692
Postconfirmation, Receivables, Net	72,350
Postconfirmation, Inventories	23,283
Postconfirmation, Prepaid and Other Current Assets	25,353
Postconfirmation, Current Assets	236,866
Property and equipment, gross	408,436
Accumulated depreciation	0
Property and equipment, net	408,436
Other intangible assets, net	520
Postconfirmation, Other Assets, Noncurrent	17,797
Total assets	663,619
Postconfirmation, Current Liabilities [Abstract]
Postconfirmation, Accounts Payable	12,338
Postconfirmation, Other Current Liabilities	98,228
Postconfirmation, Current Maturities of Long-term Debt	2,500
Postconfirmation, Current Liabilities	113,066
Long-term debt	245,460
Workers’ compensation, vehicular and health insurance liabilities	23,126
Deferred tax liabilities	35
Other non-current liabilities	29,802
Liabilities subject to compromise	0
Postconfirmation, Stockholders' Equity [Abstract]
Postconfirmation, Common Stock	201
Postconfirmation, Additional Paid-in Capital	251,929
Postconfirmation, Accumulated Other Comprehensive Income (Loss)	0
Postconfirmation, Retained Earnings (Deficit)	0
Postconfirmation, Stockholders' Equity	252,130
Postconfirmation, Liabilities and Stockholders' Equity	663,619
Predecessor [Member]
Current assets:
Preconfirmation, Cash and Cash Equivalents	38,751
Preconfirmation, Restricted Cash and Cash Equivalents, Current	19,292
Preconfirmation, Receivables, Net	72,560
Preconfirmation, Inventories	22,900
Preconfirmation, Prepaid and Other Current Assets	27,648
Preconfirmation, Current Assets	181,151
Preconfirmation, Property and Equipment, Gross	2,235,828
Preconfirmation, Accumulated Depreciation and Amortization	1,523,585
Net property and equipment	712,243
Preconfirmation, Intangible Assets Other than Goodwill, Net	3,596
Preconfirmation, Other Assets, Noncurrent	17,428
Preconfirmation, Assets	914,418
Preconfirmation, Current Liabilities [Abstract]
Preconfirmation, Accounts Payable	12,338
Preconfirmation, Other Current Liabilities	99,524
Preconfirmation, Current Maturities of Long-term Debt	(3,099)
Preconfirmation, Current Liabilities	108,763
Preconfirmation, Long-term Debt	0
Preconfirmation, Employee Related Liabilities, Noncurrent	23,126
Preconfirmation, Deferred Income Tax Liabilities, Noncurrent	35
Preconfirmation, Noncurrent Other Obligations	35,754
Preconfirmation, Liabilities Subject to Compromise	996,527
Preconfirmation, Stockholders' Equity [Abstract]
Preconfirmation, Common Stock	16,055
Preconfirmation, Additional Paid-in Capital	969,915
Preconfirmation, Accumulated Other Comprehensive Income (Loss)	(40,394)
Preconfirmation, Retained Earnings (Deficit)	(1,195,363)
Preconfirmation, Stockholders' Equity	(249,787)
Preconfirmation, Liabilities and Stockholders' Equity	914,418
Discharge of Debt [Member]
Fresh-Start Adjustment, Increase (Decrease), Current Assets [Abstract]
Fresh-Start Adjustment, Increase (Decrease), Cash and Cash Equivalents	52,437
Fresh-Start Adjustment, Increase (Decrease), Restricted Cash and Cash Equivalents, Current	5,400
Fresh-Start Adjustment, Increase (Decrease), Receivables, Net	(210)
Inventory fair value adjustment	0
Fresh-Start Adjustment, Increase (Decrease), Prepaid and Other Current Assets	(2,295)
Fresh-Start Adjustment, Increase (Decrease), Current Assets	55,332
Fresh-Start Adjustment, Increase (Decrease), Property and Equipment, Gross	0
Fresh-Start Adjustment, Increase (Decrease), Accumulated Depreciation and Amortization	0
Fresh-Start Adjustment, Increase (Decrease), Property and Equipment, Net	0
Fresh-Start Adjustment, Increase (Decrease), Intangible Assets Other than Goodwill, Net	0
Fresh-Start Adjustment, Increase (Decrease), Other Assets, Noncurrent	0
Fresh-Start Adjustment, Increase (Decrease), Assets	55,332
Fresh-Start Adjustment, Increase (Decrease), Current Liabilities [Abstract]
Fresh-Start Adjustment, Increase (Decrease), Accounts Payable	0
Fresh-Start Adjustment, Increase (Decrease), Other Current Liabilities	(1,032)
Fresh-Start Adjustment, Increase (Decrease), Current Maturities of Long-term Debt	5,599
Fresh-Start Adjustment, Increase (Decrease), Current Liabilities	4,567
Fresh-Start Adjustment, Increase (Decrease), Long-term Debt	245,460
Fresh-Start Adjustment, Increase (Decrease), Employee Related Liabilities, Noncurrent	0
Fresh-Start Adjustment, Increase (Decrease), Deferred Income Tax Liabilities, Noncurrent	0
Fresh-Start Adjustment, Increase (Decrease), Noncurrent Other Obligations	332
Fresh-Start Adjustment, Increase (Decrease), Liabilities Subject to Compromise	(996,527)
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity [Abstract]
Fresh-Start Adjustment, Increase (Decrease), Common Stock	(15,854)
Fresh-Start Adjustment, Increase (Decrease), Additional Paid-in Capital	252,516
Fresh-Start Adjustment, Increase (Decrease), Accumulated Other Comprehensive Income (Loss)	0
Fresh-Start Adjustment, Increase (Decrease), Retained Earnings (Deficit)	564,838
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity	801,500
Fresh-Start Adjustment, Increase (Decrease), Liabilities and Stockholders' Equity	55,332
Discharge of Debt [Member] | Predecessor [Member]
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity [Abstract]
Fresh-Start Adjustment, Increase (Decrease), Additional Paid-in Capital	588
Revaluation of Assets [Member]
Fresh-Start Adjustment, Increase (Decrease), Current Assets [Abstract]
Fresh-Start Adjustment, Increase (Decrease), Cash and Cash Equivalents	0
Fresh-Start Adjustment, Increase (Decrease), Restricted Cash and Cash Equivalents, Current	0
Fresh-Start Adjustment, Increase (Decrease), Receivables, Net	0
Inventory fair value adjustment	383
Fresh-Start Adjustment, Increase (Decrease), Prepaid and Other Current Assets	0
Fresh-Start Adjustment, Increase (Decrease), Current Assets	383
Fresh-Start Adjustment, Increase (Decrease), Property and Equipment, Gross	(1,827,392)
Fresh-Start Adjustment, Increase (Decrease), Accumulated Depreciation and Amortization	1,523,585
Fresh-Start Adjustment, Increase (Decrease), Property and Equipment, Net	(303,807)
Fresh-Start Adjustment, Increase (Decrease), Intangible Assets Other than Goodwill, Net	(3,076)
Fresh-Start Adjustment, Increase (Decrease), Other Assets, Noncurrent	369
Fresh-Start Adjustment, Increase (Decrease), Assets	(306,131)
Revaluation of Liabilities [Member]
Fresh-Start Adjustment, Increase (Decrease), Current Liabilities [Abstract]
Fresh-Start Adjustment, Increase (Decrease), Accounts Payable	0
Fresh-Start Adjustment, Increase (Decrease), Other Current Liabilities	(264)
Fresh-Start Adjustment, Increase (Decrease), Current Maturities of Long-term Debt	0
Fresh-Start Adjustment, Increase (Decrease), Current Liabilities	(264)
Fresh-Start Adjustment, Increase (Decrease), Long-term Debt	0
Fresh-Start Adjustment, Increase (Decrease), Employee Related Liabilities, Noncurrent	0
Fresh-Start Adjustment, Increase (Decrease), Deferred Income Tax Liabilities, Noncurrent	0
Fresh-Start Adjustment, Increase (Decrease), Noncurrent Other Obligations	(6,284)
Fresh-Start Adjustment, Increase (Decrease), Liabilities Subject to Compromise	0
Exchange of Stock for Stock [Member]
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity [Abstract]
Fresh-Start Adjustment, Increase (Decrease), Common Stock	0
Fresh-Start Adjustment, Increase (Decrease), Additional Paid-in Capital	(970,502)
Fresh-Start Adjustment, Increase (Decrease), Accumulated Other Comprehensive Income (Loss)	40,394
Fresh-Start Adjustment, Increase (Decrease), Retained Earnings (Deficit)	630,525
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity	(299,583)
Fresh-Start Adjustment, Increase (Decrease), Liabilities and Stockholders' Equity	$ (306,131)