Consolidated Balance Sheet - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 53,566	$ 73,640
Restricted cash	998	2,008
Receivables:
Trade, net of allowance for doubtful accounts	76,924	79,592
Unbilled receivables	24,822
Insurance recoveries	23,656	13,874
Other receivables	5,479	3,510
Inventory	18,898	14,057
Assets held for sale	3,582	6,620
Prepaid expenses and other current assets	7,109	6,229
Total current assets	215,034	215,559
Property and equipment, at cost	1,118,215	1,093,635
Less accumulated depreciation	593,357	544,012
Net property and equipment	524,858	549,623
Other noncurrent assets	1,658	1,687
Total assets	741,550	766,869
Current liabilities:
Accounts payable	34,134	29,538
Deferred revenues	1,722	905
Accrued expenses:
Payroll and related employee costs	24,598	21,023
Insurance claims and settlements	23,593	13,289
Insurance premiums and deductibles	5,482	6,742
Interest	6,148	6,624
Other	9,091	6,793
Total current liabilities	104,768	84,914
Long-term debt, less unamortized discount and debt issuance costs	464,552	461,665
Deferred income taxes	3,688	3,151
Other noncurrent liabilities	3,484	7,043
Total liabilities	576,492	556,773
Commitments and contingencies (Note 12)
Shareholders' equity:
Preferred stock, 10,000,000 shares authorized; none issued and outstanding	0	0
Common stock $.10 par value; 200,000,000 shares authorized; 78,214,550 and 77,719,021 shares outstanding at December 31, 2018 and December 31, 2017, respectively	7,900	7,835
Additional paid-in capital	550,548	546,158
Treasury stock, at cost; 789,532 and 630,688 shares at December 31, 2018 and December 31, 2017, respectively	(4,965)	(4,416)
Accumulated deficit	(388,425)	(339,481)
Total shareholders' equity	165,058	210,096
Total liabilities and shareholders' equity	$ 741,550	$ 766,869