Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash, cash equivalents and restricted cash	$ 54,784	$ 59,322
Accounts receivable, net of allowance of $2,716 in 2019 and $1,444 in 2018	128,514	147,755
Inventory	36,477	33,536
Prepaid supplies and other	19,092	18,608
TOTAL CURRENT ASSETS	238,867	259,221
Property and equipment, net	1,650,612	1,555,005
Lease incentive	155,605	63,780
Other assets	67,285	57,220
Goodwill and acquired intangibles	533,371	535,359
Operating lease assets	57,576	0
Intangibles	137,397	144,614
Goodwill	395,974	390,745
TOTAL ASSETS	2,703,316	2,470,585
CURRENT LIABILITIES:
Accounts payable	122,092	109,843
Accrued salaries, wages and benefits	49,068	50,932
Accrued expenses	14,212	19,623
Current portion of debt obligations	39,236	29,654
Current portion of lease obligations	15,770	0
Unearned revenue	18,637	19,082
TOTAL CURRENT LIABILITIES	259,015	229,134
Long term debt	1,402,782	1,371,598
Post-retirement obligations	59,738	64,485
Long term lease obligations	40,573	0
Other liabilities	50,882	51,905
Stock Warrants	401,441	203,782
Deferred income taxes	118,076	113,243
TOTAL LIABILITIES	2,332,507	2,034,147
Commitments and contingencies (Note H)
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; 150,000,000 shares authorized; 59,363,839 and 59,134,173 shares issued and outstanding in 2019 and 2018, respectively	594	591
Additional paid-in capital	473,053	471,158
Accumulated earnings (deficit)	(19,243)	56,051
Accumulated other comprehensive loss	(83,595)	(91,362)
TOTAL STOCKHOLDERS’ EQUITY	370,809	436,438
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 2,703,316	$ 2,470,585