Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 5,633	$ 2,859
Restricted Cash	595	628
Accounts receivable, net of allowance for credit losses of $837 and $549, respectively	113,736	70,780
Income tax receivable	2,092	5,723
Inventories, net	146,091	130,270
Contract assets	10,001	5,749
Prepaid expenses and other	5,548	2,071
Total current assets	283,696	218,080
Property, plant and equipment:
Land	5,016	5,016
Buildings	139,089	135,861
Machinery and equipment	326,306	318,259
Furniture and fixtures	23,817	23,072
Total property, plant and equipment	494,228	482,208
Less: Accumulated depreciation	227,858	224,146
Property, plant and equipment, net	266,370	258,062
Intangible assets, net	67,310	70,121
Goodwill	81,892	85,727
Right of use assets	16,862	16,974
Note receivable	1,328	1,216
Total assets	717,458	650,180
Current liabilities:
Accounts payable	35,796	29,020
Accrued liabilities	52,890	50,206
Contract liabilities	25,540	7,542
Total current liabilities	114,226	86,768
Revolving credit facility, long-term	65,000	40,000
Deferred tax liabilities	32,966	31,993
Other long-term liabilities	18,693	18,843
New market tax credit obligation	6,417	6,406	[1]
Commitments and contingencies
Stockholders' equity:
Preferred stock, $.001 par value, 5,000,000 shares authorized, no shares issued	0	0
Common stock, $.004 par value, 100,000,000 shares authorized, 53,065,081 and 52,527,985 issued and outstanding at March 31, 2022 and December 31, 2021, respectively	212	210
Additional paid-in capital	77,574	81,654
Retained earnings	402,370	384,306
Total stockholders' equity	480,156	466,170
Total liabilities and stockholders' equity	$ 717,458	$ 650,180

[1]  (a) Held by variable interest entities (Note 17)