Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 50,460	$ 90,300
Trade receivable, net of allowances of $2,549 and $1,838, respectively	123,655	144,767
Income tax receivable	0	1,574
Inventories	28,039	36,449
Prepaid expenses	14,784	17,479
Other current assets	8,958	4,640
Total current assets	225,896	295,209
Property and equipment, net	406,878	448,801
Operating lease right-of-use assets	17,248
Deferred debt costs, net of amortization	2,346	2,747
Intangible assets, net of amortization	2,806	2,984
Other assets	12,455	12,036
Total assets	667,629	761,777
Current liabilities:
Accounts payable	66,396	98,323
Accrued expenses	65,345	44,956
Current portion of long-term debt, net of $120 and $479 discount at September 30, 2019 and December 31, 2018, respectively	22,627	27,039
Operating lease right-of-use liabilities, current portion	5,459
Accrued short-term insurance reserves	8,221	10,870
Other current liabilities	4,031	3,123
Total current liabilities	172,079	184,311
Long-term debt, net of discounts and deferred financing costs of $9,385 and $10,690, at September 30, 2019 and December 31, 2018, respectively	313,511	322,701
Operating lease right-of-use liabilities, long-term portion	11,789
Asset retirement obligations	9,331	2,587
Accrued long-term insurance reserves	18,800	18,624
Other long-term liabilities	14,174	14,126
Stockholders' equity:
Preferred stock; $0.01 par value; 5,000,000 shares authorized; zero outstanding at September 30, 2019 and December 31, 2018	0	0
Common stock; $0.01 par value; 80,000,000 shares authorized; 27,912,059 and 26,990,034 shares issued and 24,946,685 and 26,747,712 shares outstanding at September 30, 2019 and December 31, 2018, respectively	279	270
Additional paid-in capital	471,648	464,264
Retained deficit	(335,401)	(241,271)
Treasury stock, at cost, 2,965,374 and 242,322 shares at September 30, 2019 and December 31, 2018, respectively	(8,581)	(3,835)
Total stockholders' equity	127,945	219,428
Total liabilities and stockholders' equity	$ 667,629	$ 761,777