Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash, cash equivalents and restricted cash	$ 46,201	$ 59,322
Accounts receivable, net of allowance of $975 in 2019 and $1,444 in 2018	162,870	147,755
Inventory	37,397	33,536
Prepaid supplies and other	20,323	18,608
TOTAL CURRENT ASSETS	266,791	259,221
Property and equipment, net	1,766,020	1,555,005
Lease incentive	146,678	63,780
Other assets	68,733	57,220
Goodwill and acquired intangibles	527,654	535,359
Operating lease assets	44,302	0
Intangibles	131,680	144,614
Goodwill	395,974	390,745
TOTAL ASSETS	2,820,178	2,470,585
CURRENT LIABILITIES:
Accounts payable	141,094	109,843
Accrued salaries, wages and benefits	59,429	50,932
Accrued expenses	17,586	19,623
Current portion of debt obligations	14,707	29,654
Current portion of lease obligations	12,857	0
Unearned revenue	17,566	19,082
TOTAL CURRENT LIABILITIES	263,239	229,134
Long term debt	1,469,677	1,371,598
Post-retirement obligations	36,744	64,485
Long term lease obligations	30,334	0
Other liabilities	49,293	51,905
Stock Warrants	383,073	203,782
Deferred income taxes	127,476	113,243
TOTAL LIABILITIES	2,359,836	2,034,147
Commitments and contingencies (Note I)
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; 59,329,431 and 59,134,173 shares issued and outstanding in 2019 and 2018, respectively	593	591
Additional paid-in capital	475,720	471,158
Retained earnings	45,895	56,051
Accumulated other comprehensive loss	(61,866)	(91,362)
TOTAL STOCKHOLDERS’ EQUITY	460,342	436,438
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 2,820,178	$ 2,470,585