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

12 Months Ended

Dec. 31, 2019

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Year ended December 31,
	2019		2018
Americas	$	69,359	$	63,649
Europe, Middle East and Africa	$	39,480		35,319
Asia/Pacific Rim	$	8,393		6,600
Total	$	117,232	$	105,568

Schedule of Advertising Expenses [Table Text Block]

	Year ended December 31,
	2019		2018		2017
			(in thousands)
Advertising expense	$	286	$	299	$	305

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, 2019	$	399	$	388	$	265		522
Year ended December 31, 2018		349		264		214		399
Year ended December 31, 2017		258		230		139		349

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

Description	Useful Life (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,
	2019		2018		2017
	(in thousands, except per share data)
Basic:
Net income available for common stockholders	$	17,934	$	22,943	$	17,177
Weighted average shares outstanding		19,813		19,426		18,961
Basic earnings per share	$	0.91	$	1.18	$	0.91
Diluted:
Net income available for common stockholders	$	17,934	$	22,943	$	17,177
Weighted-average shares outstanding		19,813		19,426		18,961
Common stock equivalents, if dilutive		513		816		1,072
Shares used in computing diluted earnings per common share		20,326		20,242		20,033
Diluted earnings per share	$	0.88	$	1.13	$	0.86
Shares excluded in computing diluted earnings per share as those shares would be anti-dilutive		468		230		6