Consolidated Balance Sheets - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents		$ 2,859	$ 79,025
Restricted cash		628	3,263
Accounts receivable, net of allowance for credit losses of $549 and $506, respectively		70,780	47,387
Income tax receivable		5,723	4,587
Inventories, net		130,270	82,219
Contract assets		5,749	0
Prepaid expenses and other		2,071	3,770
Total current assets		218,080	220,251
Property, plant and equipment:
Land		5,016	4,072
Buildings		135,861	122,171
Machinery and equipment		318,259	281,266
Furniture and fixtures		23,072	18,956
Total property, plant and equipment		482,208	426,465
Less: Accumulated depreciation		224,146	203,125
Property, plant and equipment, net		258,062	223,340
Intangible assets, net		70,121	38
Goodwill		85,727	3,229
Right of use assets		16,974	1,571
Other long-term assets		1,216	579
Total assets		650,180	449,008
Current liabilities:
Accounts payable		29,020	12,447
Accrued liabilities		50,206	46,586
Contract liabilities		7,542	0
Total current liabilities		86,768	59,033
Revolving credit facility, long-term		40,000	0
Deferred tax liabilities		31,993	28,324
Other long-term liabilities		18,843	4,423
New market tax credit obligation	[1]	6,406	6,363
Commitments and contingencies (Note 19)
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, 52,527,985 and 52,224,767 issued and outstanding at December 31, 2021 and 2020, respectively		210	209
Additional paid-in capital		81,654	5,161
Retained earnings		384,306	345,495
Total stockholders’ equity		466,170	350,865
Total liabilities and stockholders’ equity		$ 650,180	$ 449,008

[1]      (a) Held by variable interest entities (Note 18)