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	1,496,000	0	0	1,496,000	0
Exercise of stock options	62,000	22,000	62,000	0	(22,000)
Exercise of stock options (in shares)	22,000	22,000			(2,000)
Restricted stock issuance	2,000	3,000	(1,000)	0	0
Restricted stock issuance (in shares)		3,000			0
Stock-based compensation	151,000	0	151,000	0	0
Balance at Jun. 30, 2013	$ 36,799,000	$ 4,038,000	$ 11,596,000	$ 24,142,000	$ (2,977,000)
Balance (in shares) at Jun. 30, 2013		4,038,000			(344,000)