Note 1 - Significant Accounting Policies and Related Matters (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Year ended December 31,
	2021		2020
Americas	$	102,265	$	81,470
Europe, Middle East and Africa		42,132		39,193
Asia Pacific		10,027		8,703
Total	$	154,424	$	129,366

Schedule of Advertising Expenses [Table Text Block]

	Year ended December 31,
	2021		2020		2019
			(in thousands)
Advertising expense	$	236	$	216	$	286

Financing Receivable, Allowance for Credit Loss [Table Text Block]

	Balance at		Additions		Deductions		Balance at
	Beginning		(recoveries) charged		from		End of
	of Period		to Income		Reserves		Period
	(in thousands)
Allowance for doubtful accounts and sales returns:
Year ended December 31, 2021	$	623	$	263	$	207	$	679
Year ended December 31, 2020		522		293		192		623
Year ended December 31, 2019		399		388		265		522

Schedule of Property, Plant and Equipment Estimated Useful Lives [Table Text Block]

Description	Useful Life (in years)
Computers and equipment	3	–	5
Machinery and equipment	3	–	10
Leasehold improvements	The shorter of its useful life or lease term

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Year ended December 31,
	2021		2020		2019
		(in thousands, except per share data)
Basic:
Net income available for common stockholders	$	26,907	$	21,220	$	17,934
Weighted average shares outstanding		21,157		20,246		19,813
Basic earnings per share	$	1.27	$	1.05	$	0.91
Net income available for common stockholders	$	26,907	$	21,220	$	17,934
Weighted-average shares outstanding		21,157		20,246		19,813
Common stock equivalents, if dilutive		318		233		513
Shares used in computing diluted earnings per common share		21,475		20,479		20,326
Diluted earnings per share	$	1.25	$	1.04	$	0.88
Shares excluded in computing diluted earnings per share as those shares would be anti-dilutive		10		483		468