Note 3 - Restatement of Previously Issued Consolidated Financial Statements - Financial Statements (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
Cash and cash equivalents	$ 41,685						$ 41,685		$ 13,434
Restricted cash	0						0		1,142
Trade accounts receivable, net of allowance for credit losses of $499 and $496, respectively	20,710						20,710		21,215
Inventories	22,156						22,156		22,565
Prepaid expenses and other current assets	2,006						2,006		1,695
Total current assets	86,557						86,557		60,051
Machinery and equipment	6,829						6,829		6,625
Leasehold improvements	3,581						3,581		3,242
Gross property and equipment	10,410						10,410		9,867
Less: accumulated depreciation	(7,267)						(7,267)		(6,735)
Net property and equipment	3,143						3,143		3,132
Right-of-use assets, net	4,755						4,755		5,770
Goodwill	21,578						21,578		21,605
Net Carrying Amount	16,959						16,959		18,559
Deferred tax assets	1,381						1,381		280
Restricted certificates of deposit	100						100		100
Other assets	945						945		569
Total assets	135,418						135,418		110,066
Current portion of Term Note	4,100						4,100		4,100
Current portion of operating lease liabilities	1,730						1,730		1,645
Accounts payable	7,296						7,296		7,394
Accrued wages and benefits	4,030						4,030		3,907
Accrued professional fees	1,188						1,188		884
Customer deposits and deferred revenue	4,398						4,398		4,498
Accrued sales commissions	1,176						1,176		1,468
Domestic and foreign income taxes payable	1,119						1,119		1,409
Other current liabilities	1,557						1,557		1,564
Total current liabilities	26,594						26,594		26,869
Operating lease liabilities, net of current portion	3,501						3,501		4,705
Term Note, net of current portion	8,967						8,967		12,042
Contingent consideration	1,002						1,002		1,039
Deferred revenue, net of current portion	1,033						1,033		0
Other liabilities	397						397		455
Total liabilities	41,494						41,494		45,110
Commitments and Contingencies
Preferred stock, $0.01 par value; 5,000,000 shares authorized; no shares issued or outstanding	0						0		0
Common stock, $0.01 par value; 20,000,000 shares authorized; 12,237,070 and 11,063,271 shares issued, respectively	122						122		111
Additional paid-in capital	53,960						53,960		31,987
Retained earnings	40,741						40,741		32,854
Accumulated other comprehensive earnings	2						2		218
Treasury stock, at cost; 75,758 and 34,308 shares, respectively	(901)						(901)		(214)
Total stockholders' equity	93,924	$ 92,064	$ 68,498	$ 60,421	$ 58,120	$ 56,001	93,924	$ 60,421	64,956	$ 54,823
Total liabilities and stockholders' equity	135,418						135,418		$ 110,066
Revenue	30,941			30,771			95,418	84,423
Cost of revenue	16,494			16,873			50,889	45,964
Gross profit	14,447			13,898			44,529	38,459
Selling expense	4,295			4,009			13,411	11,498
Engineering and product development expense	1,802			1,866			5,689	5,649
General and administrative expense	5,882			4,864			16,099	14,623
Total operating expenses	11,979			10,739			35,199	31,770
Operating income	2,468			3,159			9,330	6,689
Interest expense	(168)			(179)			(526)	(457)
Other income	423			59			678	32
Earnings before income tax expense	2,723			3,039			9,482	6,264
Income tax expense	446			515			1,595	1,047
Net earnings	$ 2,277	$ 2,793	2,817	$ 2,524	$ 2,116	577	$ 7,887	$ 5,217
Earnings per common share - basic (in dollars per share)	$ 0.19			$ 0.24			$ 0.7	$ 0.49
Weighted average common shares outstanding - basic (in shares)	11,886,005			10,695,867			11,294,306	10,655,469
Earnings per common share - diluted (in dollars per share)	$ 0.19			$ 0.23			$ 0.68	$ 0.48
Weighted average common shares and common share equivalents outstanding - diluted (in shares)	12,212,317			10,864,540			11,665,850	10,840,644
Depreciation and amortization							$ 3,515	$ 3,674
Provision for excess and obsolete inventory	$ 119			$ 77			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
Trade accounts receivable							480	(4,900)
Inventories							(9)	(8,549)
Prepaid expenses and other current assets							(313)	(907)
Other assets							(492)	(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							(105)	(827)
Accrued sales commissions							(292)	310
Domestic and foreign income taxes payable							(292)	(672)
Other current liabilities							320	35
Deferred revenue, net of current portion							1,033	0
Other liabilities							(17)	61
Net cash provided by (used in) operating activities							11,521	(3,658)
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)
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, cash equivalents and restricted cash at beginning of period			14,576			$ 21,195	14,576	21,195
Cash and cash equivalents at end of period	41,685			$ 10,038			41,685	10,038
Term Note [Member]
Repayments of Term Note							(3,075)	$ (2,933)
Previously Reported [Member]
Cash and cash equivalents	41,685						41,685
Restricted cash	0						0
Trade accounts receivable, net of allowance for credit losses of $499 and $496, respectively	20,710						20,710
Inventories	22,156						22,156
Prepaid expenses and other current assets	1,672						1,672
Total current assets	86,223						86,223
Machinery and equipment	6,829						6,829
Leasehold improvements	3,581						3,581
Gross property and equipment	10,410						10,410
Less: accumulated depreciation	(7,267)						(7,267)
Net property and equipment	3,143						3,143
Right-of-use assets, net	4,755						4,755
Goodwill	21,578						21,578
Net Carrying Amount	16,959						16,959
Deferred tax assets	1,381						1,381
Restricted certificates of deposit	100						100
Other assets	444						444
Total assets	134,583						134,583
Current portion of Term Note	4,100						4,100
Current portion of operating lease liabilities	1,730						1,730
Accounts payable	7,296						7,296
Accrued wages and benefits	4,030						4,030
Accrued professional fees	1,188						1,188
Customer deposits and deferred revenue	3,709						3,709
Accrued sales commissions	1,248						1,248
Domestic and foreign income taxes payable	1,245						1,245
Other current liabilities	1,557						1,557
Total current liabilities	26,103						26,103
Operating lease liabilities, net of current portion	3,501						3,501
Term Note, net of current portion	8,967						8,967
Contingent consideration	1,002						1,002
Deferred revenue, net of current portion	0						0
Other liabilities	397						397
Total liabilities	39,970						39,970
Preferred stock, $0.01 par value; 5,000,000 shares authorized; no shares issued or outstanding	0						0
Common stock, $0.01 par value; 20,000,000 shares authorized; 12,237,070 and 11,063,271 shares issued, respectively	122						122
Additional paid-in capital	53,960						53,960
Retained earnings	41,430						41,430
Accumulated other comprehensive earnings	2						2
Treasury stock, at cost; 75,758 and 34,308 shares, respectively	(901)						(901)
Total stockholders' equity	94,613						94,613
Total liabilities and stockholders' equity	134,583						134,583
Revenue	32,663						97,140
Cost of revenue	17,329						51,724
Gross profit	15,334						45,416
Selling expense	4,367						13,483
Engineering and product development expense	1,802						5,689
General and administrative expense	5,882						16,099
Total operating expenses	12,051						35,271
Operating income	3,283						10,145
Interest expense	(168)						(526)
Other income	423						678
Earnings before income tax expense	3,538						10,297
Income tax expense	572						1,721
Net earnings	$ 2,966						$ 8,576
Earnings per common share - basic (in dollars per share)	$ 0.25						$ 0.76
Weighted average common shares outstanding - basic (in shares)	11,886,005						11,294,306
Earnings per common share - diluted (in dollars per share)	$ 0.24						$ 0.74
Weighted average common shares and common share equivalents outstanding - diluted (in shares)	12,212,317						11,665,850
Depreciation and amortization							$ 3,515
Provision for excess and obsolete inventory							385
Foreign exchange loss							17
Amortization of deferred compensation related to stock-based awards							1,623
Discount on shares sold under Employee Stock Purchase Plan							21
Loss on disposal of property and equipment							164
Deferred income tax benefit							(1,101)
Adjustment to contingent consideration liability							(358)
Trade accounts receivable							480
Inventories							(9)
Prepaid expenses and other current assets							21
Other assets							9
Operating lease liabilities							(1,275)
Accounts payable							(100)
Accrued wages and benefits							125
Accrued professional fees							305
Customer deposits and deferred revenue							(794)
Accrued sales commissions							(220)
Domestic and foreign income taxes payable							(166)
Other current liabilities							320
Deferred revenue, net of current portion							0
Other liabilities							(17)
Net cash provided by (used in) operating activities							11,521
Refund of final working capital adjustment related to Acculogic							0
Purchase of property and equipment							(983)
Purchase of short-term investments							0
Net cash used in investing activities							(983)
Net proceeds from public offering of common stock							19,244
Proceeds from shares sold under Employee Stock Purchase Plan							118
Proceeds from stock options exercised							978
Settlement of employee tax liabilities in connection with treasury stock transaction							(687)
Net cash provided by (used in) financing activities							16,578
Effects of exchange rates on cash							(7)
Net cash provided by (used in) all activities							27,109
Cash, cash equivalents and restricted cash at beginning of period			14,576				14,576
Cash and cash equivalents at end of period	$ 41,685						41,685
Previously Reported [Member] | Term Note [Member]
Repayments of Term Note							(3,075)
Revision of Prior Period, Error Correction, Adjustment [Member]
Cash and cash equivalents	0						0
Restricted cash	0						0
Trade accounts receivable, net of allowance for credit losses of $499 and $496, respectively	0						0
Inventories	0						0
Prepaid expenses and other current assets	334						334
Total current assets	334						334
Machinery and equipment	0						0
Leasehold improvements	0						0
Gross property and equipment	0						0
Less: accumulated depreciation	0						0
Net property and equipment	0						0
Right-of-use assets, net	0						0
Goodwill	0						0
Net Carrying Amount	0						0
Deferred tax assets	0						0
Restricted certificates of deposit	0						0
Other assets	501						501
Total assets	835						835
Current portion of Term Note	0						0
Current portion of operating lease liabilities	0						0
Accounts payable	0						0
Accrued wages and benefits	0						0
Accrued professional fees	0						0
Customer deposits and deferred revenue	689						689
Accrued sales commissions	(72)						(72)
Domestic and foreign income taxes payable	(126)						(126)
Other current liabilities	0						0
Total current liabilities	491						491
Operating lease liabilities, net of current portion	0						0
Term Note, net of current portion	0						0
Contingent consideration	0						0
Deferred revenue, net of current portion	1,033						1,033
Other liabilities	0						0
Total liabilities	1,524						1,524
Preferred stock, $0.01 par value; 5,000,000 shares authorized; no shares issued or outstanding	0						0
Common stock, $0.01 par value; 20,000,000 shares authorized; 12,237,070 and 11,063,271 shares issued, respectively	0						0
Additional paid-in capital	0						0
Retained earnings	(689)						(689)
Accumulated other comprehensive earnings	0						0
Treasury stock, at cost; 75,758 and 34,308 shares, respectively	0						0
Total stockholders' equity	(689)						(689)
Total liabilities and stockholders' equity	835						835
Revenue	(1,722)						(1,722)
Cost of revenue	(835)						(835)
Gross profit	(887)						(887)
Selling expense	(72)						(72)
Engineering and product development expense	0						0
General and administrative expense	0						0
Total operating expenses	(72)						(72)
Operating income	(815)						(815)
Interest expense	0						0
Other income	0						0
Earnings before income tax expense	(815)						(815)
Income tax expense	(126)						(126)
Net earnings	$ (689)						$ (689)
Earnings per common share - basic (in dollars per share)	$ (0.06)						$ (0.06)
Weighted average common shares outstanding - basic (in shares)
Earnings per common share - diluted (in dollars per share)	$ (0.05)						$ (0.06)
Weighted average common shares and common share equivalents outstanding - diluted (in shares)
Depreciation and amortization							$ 0
Provision for excess and obsolete inventory							0
Foreign exchange loss							0
Amortization of deferred compensation related to stock-based awards							0
Discount on shares sold under Employee Stock Purchase Plan							0
Loss on disposal of property and equipment							0
Deferred income tax benefit							0
Adjustment to contingent consideration liability							0
Trade accounts receivable							0
Inventories							0
Prepaid expenses and other current assets							(334)
Other assets							(501)
Operating lease liabilities							0
Accounts payable							0
Accrued wages and benefits							0
Accrued professional fees							0
Customer deposits and deferred revenue							689
Accrued sales commissions							(72)
Domestic and foreign income taxes payable							(126)
Other current liabilities							0
Deferred revenue, net of current portion							1,033
Other liabilities							0
Net cash provided by (used in) operating activities							0
Refund of final working capital adjustment related to Acculogic							0
Purchase of property and equipment							0
Purchase of short-term investments							0
Net cash used in investing activities							0
Net proceeds from public offering of common stock							0
Proceeds from shares sold under Employee Stock Purchase Plan							0
Proceeds from stock options exercised							0
Settlement of employee tax liabilities in connection with treasury stock transaction							0
Net cash provided by (used in) financing activities							0
Effects of exchange rates on cash							0
Net cash provided by (used in) all activities							0
Cash, cash equivalents and restricted cash at beginning of period			$ 0				0
Cash and cash equivalents at end of period	$ 0						0
Revision of Prior Period, Error Correction, Adjustment [Member] | Term Note [Member]
Repayments of Term Note							$ 0