Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Revenues		$ 59,263	$ 64,720
Cost of revenues		32,961	36,109
Gross margin		26,302	28,611
Research and development expenses		9,362	8,819
Selling, general and administrative expenses		16,004	16,433
Income from operations		936	3,359
Interest income and other, net		224	220
Income before income taxes		1,160	3,579
Income tax provision		386	752
Net income		$ 774	$ 2,827
Net income per share - Basic (in usd per share)	[1]	$ 0.11	$ 0.40
Net income per share - Diluted (in usd per share)	[1]	$ 0.11	$ 0.39
Weighted average shares outstanding – Basic, shares		7,113	7,028
Weighted average shares outstanding – Diluted, shares		7,262	7,208

[1] The summation of quarterly per share amounts may not equal the calculation for the full year, as each quarterly calculation is performed discretely.