Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balances (in shares) at Dec. 31, 2016	2,042,000
Balances at Dec. 31, 2016	$ 19,063		$ (14,224)	$ 4,839
Exercise of stock options (in shares)	1,000			600
Exercise of stock options	$ 4			$ 4
Share-based compensation	413			413
Net income			640	640
Balances (in shares) at Dec. 31, 2017	2,043,000
Balances at Dec. 31, 2017	$ 19,480		(13,584)	$ 5,896
Exercise of stock options (in shares)	5,000			5,500
Exercise of stock options	$ 39			$ 39
Share-based compensation
Net income			1,486	1,486
Stock repurchase (in shares)	(18,000)
Stock repurchase	$ (93)			(93)
Balances (in shares) at Dec. 31, 2018	2,030,000
Balances at Dec. 31, 2018	$ 19,426		$ (12,098)	$ 7,328