CONSOLIDATED CONDENSED STATEMENT OF SHAREHOLDERS' EQUITY (USD $)	Total	Common Class A [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]
Balance at Dec. 31, 2012	$ 35,088,000	$ 4,013,000	$ 11,384,000	$ 22,646,000	$ (2,955,000)
Balance (in shares) at Dec. 31, 2012		4,013,000			(342,000)
Net income	621,000	0	0	621,000	0
Exercise of Stock options	0	6,000	16,000	0	(22,000)
Exercise of Stock options (in shares)	5,500	6,000			(2,000)
Stock-based compensation	47,000	0	47,000	0	0
Balance at Mar. 31, 2013	$ 35,756,000	$ 4,019,000	$ 11,447,000	$ 23,267,000	$ (2,977,000)
Balance (in shares) at Mar. 31, 2013		4,019,000			(344,000)