Consolidated Balance Sheet - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 35,679	$ 34,924
Receivables:
Trade, net of allowance for doubtful accounts	51,963	136,161
Unbilled receivables	7,653	38,002
Insurance recoveries	14,947	10,900
Other receivables	7,410	5,138
Deferred income taxes	6,299	10,998
Inventory	8,995	14,117
Assets held for sale	2,065	9,909
Prepaid expenses and other current assets	5,927	8,925
Total current assets	140,938	269,074
Property and equipment, at cost	1,509,931	1,702,273
Less accumulated depreciation	731,235	845,732
Net property and equipment	778,696	856,541
Intangible assets, net of accumulated amortization of $46.1 million and $40.3 million at September 30, 2015 and December 31, 2014, respectively	18,268	24,223
Noncurrent deferred income taxes	0	2,753
Other long-term assets	11,226	18,998
Total assets	949,128	1,171,589
Current liabilities:
Accounts payable	35,072	64,305
Current portion of long-term debt	0	27
Deferred revenues	14,772	3,315
Accrued expenses:
Payroll and related employee costs	16,934	40,058
Insurance premiums and deductibles	8,302	12,829
Insurance claims and settlements	14,947	10,900
Interest	861	5,432
Other	6,419	10,326
Total current liabilities	97,307	147,192
Long-term debt, less current portion	410,000	455,053
Noncurrent deferred income taxes	48,745	69,578
Other long-term liabilities	4,193	4,702
Total liabilities	$ 560,245	$ 676,525
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; 64,497,915 and 63,820,126 shares outstanding at September 30, 2015 and December 31, 2014, respectively	6,496	6,414
Additional paid-in capital	473,763	472,457
Treasury stock, at cost; 458,170 and 317,103 shares at September 30, 2015 and December 31, 2014, respectively	(3,759)	(3,030)
Accumulated earnings (deficit)	(87,617)	19,223
Total shareholders' equity	388,883	495,064
Total liabilities and shareholders' equity	$ 949,128	$ 1,171,589