Condensed Consolidated Balance Sheet - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 26,955	$ 53,566
Restricted cash	998	998
Receivables:
Trade, net of allowance for doubtful accounts	81,039	76,924
Unbilled receivables	20,906	24,822
Insurance recoveries	23,186	23,656
Other receivables	7,421	5,479
Inventory	22,086	18,898
Assets held for sale	6,233	3,582
Prepaid expenses and other current assets	6,991	7,109
Total current assets	195,815	215,034
Property and equipment, at cost	1,118,488	1,118,215
Less accumulated depreciation	633,233	593,357
Net property and equipment	485,255	524,858
Operating lease assets	7,692	0
Other noncurrent assets	931	1,658
Total assets	689,693	741,550
Current liabilities:
Accounts payable	32,127	34,134
Deferred revenues	1,616	1,722
Accrued expenses:
Employee compensation and related costs	22,489	24,598
Insurance claims and settlements	22,991	23,593
Insurance premiums and deductibles	6,036	5,482
Interest	1,008	6,148
Other	12,035	9,091
Total current liabilities	98,302	104,768
Long-term debt, less unamortized discount and debt issuance costs	466,887	464,552
Noncurrent operating lease liabilities	6,189	0
Deferred income taxes	4,708	3,688
Other noncurrent liabilities	459	3,484
Total liabilities	576,545	576,492
Commitments and contingencies (Note 11)
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; 79,202,216 and 78,214,550 shares outstanding at September 30, 2019 and December 31, 2018, respectively	8,008	7,900
Additional paid-in capital	552,453	550,548
Treasury stock, at cost; 877,047 and 789,532 shares at September 30, 2019 and December 31, 2018, respectively	(5,090)	(4,965)
Accumulated deficit	(442,223)	(388,425)
Total shareholders' equity	113,148	165,058
Total liabilities and shareholders' equity	$ 689,693	$ 741,550