CONSOLIDATED 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, 2013	$ 38,730,000	$ 4,038,000	$ 11,798,000	$ 25,871,000	$ (2,977,000)
Balance (in shares) at Dec. 31, 2013		4,038,000			(344,000)
Net income	1,034,000	0	0	1,034,000	0
Exercise of stock options	710,000	93,000	623,000	0	(6,000)
Exercise of stock options (in shares)		93,000			(1,000)
Restricted stock issuance	14,000	3,000	11,000	0	0
Restricted stock issuance (in shares)		3,000
Stock-based compensation	144,000	0	144,000	0	0
Balance at Jun. 30, 2014	$ 40,632,000	$ 4,134,000	$ 12,576,000	$ 26,905,000	$ (2,983,000)
Balance (in shares) at Jun. 30, 2014		4,134,000			(345,000)