Consolidated Balance Sheet - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 18,669	$ 14,160
Receivables:
Trade, net of allowance for doubtful accounts	42,227	47,577
Unbilled receivables	4,144	13,624
Insurance recoveries	15,196	14,556
Other receivables	3,856	4,059
Inventory	8,501	9,262
Assets held for sale	4,276	4,619
Prepaid expenses and other current assets	6,678	7,411
Total current assets	103,547	115,268
Property and equipment, at cost	1,149,158	1,146,994
Less accumulated depreciation	469,890	444,409
Net property and equipment	679,268	702,585
Intangible assets, net of accumulated amortization of $12.3 million at both March 31, 2016 and December 31, 2015	1,551	1,944
Deferred income taxes	22	18
Other long-term assets	2,137	2,178
Total assets	786,525	821,993
Current liabilities:
Accounts payable	12,966	16,951
Deferred revenues	7,878	6,222
Accrued expenses:
Payroll and related employee costs	14,346	13,859
Insurance premiums and deductibles	6,676	8,087
Insurance claims and settlements	15,196	14,556
Interest	919	5,508
Other	4,459	4,859
Total current liabilities	62,440	70,042
Long-term debt, less current portion	387,621	387,217
Deferred income taxes	16,288	17,520
Other long-term liabilities	5,064	4,571
Total liabilities	$ 471,413	$ 479,350
Commitments and contingencies (Note 9)
Shareholders' equity:
Preferred stock, 10,000,000 shares authorized; none issued and outstanding	$ 0	$ 0
Common stock $.10 par value; 100,000,000 shares authorized; 64,684,509 and 64,497,915 shares outstanding at March 31, 2016 and December 31, 2015, respectively	6,517	6,496
Additional paid-in capital	476,013	475,823
Treasury stock, at cost; 489,754 and 458,170 shares at March 31, 2016 and December 31, 2015, respectively	(3,802)	(3,759)
Accumulated deficit	(163,616)	(135,917)
Total shareholders' equity	315,112	342,643
Total liabilities and shareholders' equity	$ 786,525	$ 821,993