Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
CURRENT ASSETS:
Cash and cash equivalents	$ 16,358	$ 17,697
Accounts receivable, net of allowance of $1,264 in 2016 and $415 in 2015	77,247	57,986
Inventory	19,925	12,963
Prepaid supplies and other	19,123	12,660
TOTAL CURRENT ASSETS	132,653	101,306
Property and equipment, net	1,000,992	875,401
Other assets	80,099	26,285
Goodwill and acquired intangibles	45,586	38,729
Intangibles	8,453	4,334
Goodwill	37,133	34,395
TOTAL ASSETS	1,259,330	1,041,721
CURRENT LIABILITIES:
Accounts payable	60,704	44,417
Accrued salaries, wages and benefits	37,044	27,454
Accrued expenses	10,324	8,107
Current portion of debt obligations	29,306	33,740
Unearned revenue	18,407	12,963
TOTAL CURRENT LIABILITIES	155,785	126,681
Long term debt	429,415	283,918
Post-retirement obligations	77,713	108,194
Other liabilities	52,542	61,913
Stock Warrants	89,441	0
Deferred income taxes	122,532	96,858
TOTAL LIABILITIES	927,428	677,564
Commitments and contingencies (Note G)
STOCKHOLDERS’ EQUITY:
Preferred stock, 20,000,000 shares authorized, including 75,000 Series A Junior Participating Preferred Stock	0	0
Common stock, par value $0.01 per share; 85,000,000 shares authorized; 59,461,291 and 64,077,140 shares issued and outstanding in 2016 and 2015, respectively	595	641
Additional paid-in capital	443,416	518,259
Accumulated deficit	(32,243)	(55,731)
Accumulated other comprehensive loss	(79,866)	(99,012)
TOTAL STOCKHOLDERS’ EQUITY	331,902	364,157
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 1,259,330	$ 1,041,721