SUBSEQUENT EVENTS (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2013
Common Class D [Member]
Stock Repurchased During Period, Shares	951,974
Common Class D [Member] | Subsequent Event [Member]
Stock Repurchased During Period, Shares	148,100
Stock Repurchased During Period, Value	$ 258,532
Stock Repurchased During Period Per Share Value (in dollars per share)	$ 1.75
Common Class [Member]
Stock Repurchased During Period, Shares	7,150
Common Class [Member] | Subsequent Event [Member]
Stock Repurchased During Period, Shares	1,700
Stock Repurchased During Period, Value	2,985
Stock Repurchased During Period Per Share Value (in dollars per share)	$ 1.76
Repurchase Authorization 2013 [Member] | Subsequent Event [Member]
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 200,000