Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings (loss)	$ 5,610	$ 2,693
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:
Depreciation and amortization	2,350	2,528
Provision for excess and obsolete inventory	266	230
Foreign exchange (gain) loss	(47)	98
Amortization of deferred compensation related to stock-based awards	1,079	923
Discount on shares sold under Employee Stock Purchase Plan	(14)	(18)
Loss on disposal of property and equipment	98	61
Deferred income tax benefit	(685)	(805)
Changes in assets and liabilities:
Trade accounts receivable	(372)	(6,607)
Inventories	(693)	(4,894)
Prepaid expenses and other current assets	212	(87)
Other assets	2	(395)
Operating lease liabilities	(849)	(701)
Accounts payable	(1,607)	3,506
Accrued wages and benefits	(351)	(981)
Accrued professional fees	117	(471)
Customer deposits and deferred revenue	625	(264)
Accrued sales commissions	(266)	219
Domestic and foreign income taxes payable	(220)	(477)
Other current liabilities	76	264
Other liabilities	(17)	61
Net cash provided by (used in) operating activities	5,342	(5,081)
CASH FLOWS FROM INVESTING ACTIVITIES
Refund of final working capital adjustment related to Acculogic	0	371
Purchase of property and equipment	(709)	(708)
Purchase of short-term investments	0	(3,477)
Net cash used in investing activities	(709)	(3,814)
CASH FLOWS FROM FINANCING ACTIVITIES
Net proceeds from public offering of common stock	19,244	0
Proceeds from shares sold under Employee Stock Purchase Plan	83	103
Proceeds from stock options exercised	900	0
Acquisition of treasury stock-shares surrendered by employees to satisfy tax liability	(74)	(10)
Net cash provided by (used in) financing activities	18,103	(1,815)
Effects of exchange rates on cash	123	58
Net cash provided by (used in) all activities	22,859	(10,652)
Cash and cash equivalents at beginning of period	14,576	21,195
Cash and cash equivalents at end of period	37,435	10,543
Cash payments for:
Domestic and foreign income taxes	2,060	1,865
Term Note [Member]
CASH FLOWS FROM FINANCING ACTIVITIES
Repayments of Term Note	$ (2,050)	$ (1,908)