Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 20,627	$ 28,656
Accounts receivable, net of allowances of $1,684 and $1,352 at March 31, 2022 and December 31, 2021, respectively	89,397	71,419
Inventories	81,239	75,027
Income tax receivable	11,055	11,808
Other current assets	14,989	9,372
Total current assets	217,307	196,282
Property, plant and equipment, net of accumulated depreciation of $207,636 and $197,936 at March 31, 2022 and December 31, 2021, respectively	208,286	209,105
Operating lease right-of-use assets	46,771	46,443
Intangible assets, net	85,131	88,718
Investment in joint venture	32,177	34,045
Deferred tax assets	313	314
Other non-current assets	5,863	4,194
Total assets	595,848	579,101
Current liabilities:
Accounts payable	48,906	36,710
Accrued salaries, wages and benefits	20,695	17,739
Income tax payable	676	2,072
Current maturities of long-term debt	3,138	3,074
Current portion of operating lease liabilities	4,962	5,704
Other current liabilities	13,457	8,718
Total current liabilities	91,834	74,017
Deferred tax liabilities	7,920	7,456
Long-term debt, net of current portion	150,400	151,052
Operating lease liabilities, net of current portion	51,597	51,295
Other non-current liabilities	14,724	17,289
Total liabilities	316,475	301,109
Commitments and contingencies (Note 9)
Common stock - $0.01 par value per share, 90,000 shares authorized, 43,890 and 43,027 shares issued and outstanding at March 31, 2022 and December 31, 2021, respectively	439	430
Additional paid-in capital	473,072	474,757
Accumulated deficit	(222,402)	(219,100)
Accumulated other comprehensive loss	(28,081)	(31,902)
Total stockholders’ equity	223,028	224,185
Total liabilities, preferred stock, and stockholders’ equity	595,848	579,101
Series D Preferred Stock
Current liabilities:
Series D perpetual preferred stock - $0.01 par value per share, 65 shares authorized, issued and outstanding at March 31, 2022 and December 31, 2021, respectively	$ 56,345	$ 53,807