Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 31,543	$ 48,138
Accounts receivable, net	82,177	84,615
Inventories	74,770	62,517
Income tax receivable	13,071	8,800
Other current assets	13,125	11,148
Total current assets	214,686	215,218
Property, plant and equipment, net	219,808	223,690
Operating lease right-of-use assets	48,407	50,264
Intangible assets, net	95,891	103,065
Investment in joint venture	29,897	26,983
Deferred tax assets	131	0
Other non-current assets	4,763	5,742
Total assets	613,583	624,962
Current liabilities:
Accounts payable	46,834	37,435
Accrued salaries, wages and benefits	21,279	21,296
Income tax payable	1,494	3,557
Current maturities of long-term debt	4,808	4,885
Current portion of operating lease liabilities	5,130	4,797
Other current liabilities	12,651	31,261
Total current liabilities	92,196	103,231
Deferred tax liabilities	9,196	11,178
Long-term debt, net of current portion	150,728	79,025
Operating lease liabilities, net of current portion	53,601	55,053
Other non-current liabilities	26,438	17,237
Total liabilities	332,159	265,724
Commitments and contingencies (Note 11)
Common stock - $0.01 par value per share, 90,000 shares authorized, 42,686 and 43,034 shares issued and outstanding at December 31, 2020 and June 30, 2021, respectively	430	427
Additional paid-in capital	477,923	493,332
Accumulated deficit	(216,179)	(205,875)
Accumulated other comprehensive loss	(29,819)	(33,732)
Total stockholders’ equity	232,355	254,152
Total liabilities, preferred stock, and stockholders’ equity	613,583	624,962
Series D Preferred Stock
Current liabilities:
Perpetual and convertible preferred stock	49,069	0
Series B Preferred Stock
Current liabilities:
Perpetual and convertible preferred stock	$ 0	$ 105,086