Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 48,138	$ 17,911
Accounts receivable, net	84,615	83,240
Inventories	62,517	67,078
Income tax receivable	8,800	5,973
Current assets of discontinued operations	0	117,000
Other current assets	11,148	11,778
Total current assets	215,218	302,980
Property, plant and equipment, net	223,690	255,977
Operating lease right-of-use assets	50,264	45,452
Goodwill	0	94,779
Intangible assets, net	103,065	117,413
Investment in joint venture	26,983	21,755
Non-current assets of discontinued operations	0	695,054
Other non-current assets	5,742	8,574
Total assets	624,962	1,541,984
Current liabilities:
Accounts payable	37,435	40,973
Accrued salaries, wages and benefits	21,296	15,584
Income tax payable	3,557	684
Current maturities of long-term debt	4,885	19,106
Current portion of operating lease liabilities	4,797	4,288
Current liabilities of discontinued operations	0	41,546
Other current liabilities	31,261	17,300
Total current liabilities	103,231	139,481
Deferred tax liabilities	11,178	24,461
Non-current income tax payable	0	1,272
Long-term debt, net of current portion	79,025	757,250
Operating lease liabilities, net of current portion	55,053	48,575
Non-current liabilities of discontinued operations	0	84,199
Other non-current liabilities	17,237	40,457
Total liabilities	265,724	1,095,695
Commitments and contingencies (Note 15)
Series B convertible preferred stock - $0.01 par value per share, 100 shares authorized, 100 shares issued and outstanding at December 31, 2019, and December 31, 2020	105,086	93,012
Stockholders’ equity:
Common stock - $0.01 par value per share, 90,000 shares authorized, 42,313 and 42,686 shares issued and outstanding at December 31, 2019, and December 31, 2020, respectively	427	423
Additional paid-in capital	493,332	501,615
Warrants	0	1,076
Accumulated deficit	(205,875)	(105,283)
Accumulated other comprehensive loss	(33,732)	(44,554)
Total stockholders’ equity	254,152	353,277
Total liabilities, preferred stock, and stockholders’ equity	$ 624,962	$ 1,541,984