Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balances (in shares) at Dec. 31, 2017	2,043
Balances at Dec. 31, 2017	$ 19,480		$ (13,584)	$ 5,896
Net income			1,469	1,469
Exercise of stock options (in shares)	5
Exercise of stock options	$ 39			39
Balances (in shares) at Sep. 30, 2018	2,048
Balances at Sep. 30, 2018	$ 19,519		(12,115)	7,404
Balances (in shares) at Jun. 30, 2018	2,048
Balances at Jun. 30, 2018	$ 19,519		(12,520)	6,999
Net income			405	405
Exercise of stock options (in shares)
Exercise of stock options
Balances (in shares) at Sep. 30, 2018	2,048
Balances at Sep. 30, 2018	$ 19,519		(12,115)	7,404
Balances (in shares) at Dec. 31, 2018	2,030
Balances at Dec. 31, 2018	$ 19,426		(12,098)	7,328
Stock repurchase (in shares)	(115)
Stock repurchase	$ (636)			(636)
Net income			179	$ 179
Exercise of stock options (in shares)
Balances (in shares) at Sep. 30, 2019	1,915
Balances at Sep. 30, 2019	$ 18,790		(11,919)	$ 6,871
Balances (in shares) at Jun. 30, 2019	1,937
Balances at Jun. 30, 2019	$ 18,907		(11,968)	6,939
Stock repurchase (in shares)	(22)
Stock repurchase	$ (117)			(117)
Net income			49	49
Balances (in shares) at Sep. 30, 2019	1,915
Balances at Sep. 30, 2019	$ 18,790		$ (11,919)	$ 6,871