Condensed Consolidated Statement of Shareholders' Equity (Unaudited) - 9 months ended Sep. 30, 2018 - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2017	14,290,749				14,290,749	[1]
Balance at Dec. 31, 2017	$ 143,000	$ 5,415,000	$ (458,000)	$ 26,223,000	$ 31,323,000	[2]
Common stock repurchased and retired (in shares)	(793,000)
Common stock repurchased and retired	$ (8,000)	(2,820,000)			(2,828,000)
Stock-based compensation expense		312,000			$ 312,000
Options exercised (in shares)	131,834				131,834
Options exercised	$ 1,000	223,000			$ 224,000
Net income				3,007,000	$ 3,007,000
Cumulative-effect adjustment of change in accounting for unrealized loss on marketable securities			458,000	(458,000)
Balance (in shares) at Sep. 30, 2018	13,629,583				13,629,583
Balance at Sep. 30, 2018	$ 136,000	$ 3,130,000		$ 28,772,000	$ 32,038,000

[1] The condensed consolidated balance sheet as of December 31, 2017 has been prepared using information from the audited consolidated balance sheet as of that date.

[2] The condensed consolidated balance sheet as of December 31, 2017 has been prepared using information from the audited consolidated balance sheet as of that date.