Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 91,500	$ 79,612
Accounts receivable, net	54,892	54,002
Inventory	31,719	35,744
Other current assets	8,102	9,625
Assets held for sale	0	5,242
Total current assets	186,213	184,225
Property, plant and equipment, net	118,493	120,171
Intangibles, net	365,259	376,012
Goodwill	61,189	58,632
Deferred tax assets, net	64,777	70,147
Other long-term assets	61,871	60,634
Total assets	857,802	869,821
Current liabilities
Current portion of long-term debt and other borrowings	10,372	20,701
Accounts payable	21,471	16,284
Accrued expenses and other liabilities	41,983	41,726
Liabilities held for sale	0	1,793
Total current liabilities	73,826	80,504
Asset retirement obligations	14,797	14,020
Long-term debt, net and other borrowings	169,249	197,699
Other long-term liabilities	91,790	63,393
Total liabilities	349,662	355,616
Commitments and contingencies (See Note 18)
Stockholders’ equity
Preferred stock ($0.01 par value, 25,000 shares authorized; no shares issued and outstanding)	0	0
Common stock ($0.01 par value, 250,000 shares authorized; 67,592 and 66,875 shares issued and outstanding, respectively)	676	669
Additional paid-in capital	676,059	665,530
Accumulated deficit	(167,595)	(149,946)
Accumulated other comprehensive loss	(1,000)	(2,048)
Total stockholders’ equity	508,140	514,205
Total liabilities and stockholders’ equity	$ 857,802	$ 869,821