CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Preferred stock, par value (in dollars per share)	$ 0.10	$ 0.10
Preferred stock, shares authorized	1,000,000	1,000,000
Common stock
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	18,362,798	18,277,977
Common stock, shares outstanding	18,362,798	18,277,977
Class A common stock
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized	55,000,000	55,000,000
Common stock, shares issued	18,510,975	18,510,975
Common stock, shares outstanding	18,510,975	18,510,975