Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income			$ 16,346	$ 6,112
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	$ 5,367	$ 5,284	16,342	15,520
Amortization			5,214	8,030
Allowance for doubtful accounts			(29)	48
Inventory excess and obsolescence reserve			(2)	(511)
Stock-based compensation expense			2,854	3,771
Gain on disposal of property, plant and equipment			11	(1,311)
Impairment of long-lived assets and gain on contracts	(1,737)		(4,346)
Deferred compensation			(5,368)	(258)
Non-cash lease expense			3,006
Other non-cash adjustments			259	236
Changes in operating assets and liabilities - net of effects of acquisition:
Accounts receivable			(11,961)	(16,809)
Inventories			(4,762)	(21,037)	$ (39)
Tooling in progress			(2,745)	(310)
Prepaids and other current assets			(1,093)	(989)
Accounts payable			10,241	13,819
Deferred income taxes			5,491	1,152
Operating lease obligations			(2,698)
Accrued liabilities			6,555	5,330
Net cash provided by operating activities			33,315	12,793
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property, plant and equipment			(38,808)	(26,588)
Proceeds from sale of property, plant and equipment			7,736	5,348
Net cash used in investing activities			(31,072)	(21,240)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from bank revolving credit notes			327,170	276,568
Payments on bank revolving credit notes			(323,410)	(267,108)
Repayments of other long-term debt			(825)
Purchase of treasury stock			(4,947)	(653)
Payments on finance leases			(237)	(467)
Proceeds from the exercise of stock options				139
Other financing activities				(26)
Net cash provided by (used in) financing activities			(2,249)	8,453
Net increase (decrease) in cash and cash equivalents			(6)	6
Cash and cash equivalents at beginning of period			118	121	121
Cash and cash equivalents at end of period	$ 112	$ 127	112	127	$ 118
Supplemental disclosure of cash flow information:
Cash paid for interest			1,761	1,580
Cash paid for taxes			640	1,068
Non-cash construction in progress in accounts payable			$ 6,085	$ 4,059