CONDENSED CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $)	Jun. 30, 2013	Dec. 31, 2012
Redeemable preferred stock, par value (in dollars per share)	$ 0.60	$ 0.60
Redeemable preferred stock, authorized	200,000	200,000
Redeemable preferred stock, issued	39,941	30,265
Redeemable preferred stock, outstanding	39,941	30,265
Class A Common Stock [Member]
Common stock, par value (in dollars per share)	$ 0.60	$ 0.60
Common stock, authorized	24,655,000	24,655,000
Common stock, issued	14,642,472	14,593,011
Common stock, outstanding	14,642,472	14,593,011
Class B Common Stock [Member]
Common stock, par value (in dollars per share)	$ 0.60	$ 0.60
Common stock, authorized	145,000	145,000
Common stock, issued	0	0
Common stock, outstanding	0	0