Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 40,882	$ 51,178
Accounts receivable, net	39,927	36,818
Inventory	19,790	17,640
Other current assets	6,084	5,183
Total current assets	106,683	110,819
Property, plant & equipment, net	92,086	94,187
Intangibles, net	14,288	15,118
Goodwill	15,714	15,714
Other long-term assets	20,792	20,060
Total assets	249,563	255,898
Current liabilities
Current portion of long-term debt	2,750	3,650
Revolving line of credit	0	0
Accounts payable	17,566	18,940
Accrued expenses and other liabilities	18,814	21,249
Total current liabilities	39,130	43,839
Asset retirement obligations	9,630	9,370
Long-term debt, net	266,335	274,460
Other long-term liabilities	35,628	34,745
Total liabilities	350,723	362,414
Commitments and contingencies (See Note 12)
Stockholders' deficit
Preferred stock ($0.01 par value, 25,000,000 shares authorized; no shares issued and outstanding)	0	0
Common stock ($0.01 par value, 250,000,000 shares authorized; 37,077,587 and 36,756,106 shares issued and outstanding, respectively)	371	367
Additional paid-in capital	227,680	226,462
Accumulated deficit	(328,260)	(332,398)
Accumulated other comprehensive loss	(951)	(947)
Total stockholders' deficit	(101,160)	(106,516)
Total liabilities and stockholders' deficit	$ 249,563	$ 255,898