Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Operating activities:
Net income	$ 10,187	$ 14,890
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	5,990	4,660
Stock-based compensation	1,403	(2,767)
Deferred income taxes	(298)	1,454
Changes in operating assets and liabilities, net of acquisition
Accounts receivable	(6,582)	(2,128)
Inventories	(5,554)	1,101
Miscellaneous receivables, prepaid expenses and other assets	(3,443)	(725)
Accounts payable and other liabilities	3,790	3,097
Other	672	441
Net cash provided by operating activities	6,165	20,023
Investing activities:
Purchases of property, plant and equipment	(5,664)	(1,311)
Business acquisition	(33,000)	(2,300)
Net cash used in investing activities	(38,664)	(3,611)
Financing activities:
Net proceeds from revolving line of credit	10,900	(2,271)
Repurchase treasury shares	(33)	(2,192)
Payment of financing lease principal	(179)	(192)
Proceeds from stock option exercise	0	15
Net cash provided by (used in) financing activities	10,688	(4,640)
Effect of exchange rate changes on cash and cash equivalents	77	(74)
Increase (decrease) in cash, cash equivalents and restricted cash	(21,734)	11,698
Cash, cash equivalents and restricted cash at beginning of period	29,391	6,297
Cash, cash equivalents and restricted cash at end of period	7,657	17,995
Cash and cash equivalents	7,460	17,193
Restricted cash	197	802
Cash, cash equivalents and restricted cash	7,657	17,995
Supplemental disclosure of cash flow information
Net cash paid for income taxes	4,044	3,733
Net cash paid for interest	834	295
Additions of property, plant and equipment included in accounts payable	$ 47	$ 78