Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 2,693	$ 4,821
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:
Depreciation and amortization	2,528	1,461
Provision for excess and obsolete inventory	230	93
Foreign exchange loss	98	4
Amortization of deferred compensation related to stock-based awards	923	723
Loss on disposal of property and equipment	61	13
Deferred income tax benefit	(805)	(81)
Changes in assets and liabilities:
Trade accounts receivable	(6,607)	(4,419)
Inventories	(4,894)	(1,326)
Prepaid expenses and other current assets	(87)	246
Restricted certificates of deposit	0	40
Other assets	(395)	(6)
Operating lease liabilities	(701)	(641)
Accounts payable	3,506	1,105
Accrued wages and benefits	(981)	663
Accrued professional fees	(471)	(72)
Customer deposits and deferred revenue	(264)	499
Accrued sales commissions	219	399
Domestic and foreign income taxes payable	(477)	284
Other current liabilities	264	63
Other liabilities	61	(7)
Net cash provided by (used in) operating activities	(5,099)	3,862
CASH FLOWS FROM INVESTING ACTIVITIES
Refund of final working capital adjustment related to Acculogic	371	0
Purchase of property and equipment	(708)	(463)
Purchase of short-term investments	(3,477)	0
Net cash used in investing activities	(3,814)	(463)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from stock options exercised	0	1,002
Proceeds from shares sold under Employee Stock Purchase Plan	121	0
Shares redeemed into treasury stock	(10)	0
Net cash provided by (used in) financing activities	(1,797)	1,002
Effects of exchange rates on cash	58	(53)
Net cash provided by (used in) all activities	(10,652)	4,348
Cash and cash equivalents at beginning of period	21,195	10,277
Cash and cash equivalents at end of period	10,543	14,625
Cash payments for:
Domestic and foreign income taxes	1,865	610
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING ACTIVITIES:
Decrease in fair value of assets acquired	(371)
Increase in liability for contingent consideration	500
Increase in fair value of intangible assets	(49)
Increase in goodwill	(451)
Term Note [Member]
CASH FLOWS FROM FINANCING ACTIVITIES
Repayments of Term Note	$ (1,908)	$ 0