Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings (loss)	$ 8,576	$ 5,217
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:
Depreciation and amortization	3,515	3,674
Provision for excess and obsolete inventory	385	307
Foreign exchange loss	17	107
Amortization of deferred compensation related to stock-based awards	1,623	1,373
Discount on shares sold under Employee Stock Purchase Plan	(21)	(28)
Loss on disposal of property and equipment	164	45
Deferred income tax benefit	(1,101)	(1,162)
Adjustment to contingent consideration liability	(358)	0
Changes in assets and liabilities:
Trade accounts receivable	480	(4,900)
Inventories	(9)	(8,549)
Prepaid expenses and other current assets	21	(907)
Other assets	9	(1)
Operating lease liabilities	(1,275)	(1,064)
Accounts payable	(100)	3,947
Accrued wages and benefits	125	(527)
Accrued professional fees	305	(153)
Customer deposits and deferred revenue	(794)	(827)
Accrued sales commissions	(220)	310
Domestic and foreign income taxes payable	(166)	(672)
Other current liabilities	320	35
Other liabilities	(17)	61
Net cash provided by (used in) operating activities	11,521	(3,658)
CASH FLOWS FROM INVESTING ACTIVITIES
Refund of final working capital adjustment related to Acculogic	0	371
Purchase of property and equipment	(983)	(1,043)
Purchase of short-term investments	0	(3,494)
Net cash used in investing activities	(983)	(4,166)
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	118	148
Proceeds from stock options exercised	978	38
Settlement of employee tax liabilities in connection with treasury stock transaction	(687)	(10)
Net cash provided by (used in) financing activities	16,578	(2,757)
Effects of exchange rates on cash	(7)	(576)
Net cash provided by (used in) all activities	27,109	(11,157)
Cash and cash equivalents at beginning of period	14,576	21,195
Cash and cash equivalents at end of period	41,685	10,038
Cash payments for:
Domestic and foreign income taxes	2,988	2,926
Term Note [Member]
CASH FLOWS FROM FINANCING ACTIVITIES
Repayments of Term Note	$ (3,075)	$ (2,933)