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CONDENSED CONSOLIDATED BALANCE SHEETS [Parenthetical] - $ / shares
Sep. 30, 2015
Dec. 31, 2014
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 39,164 36,840
Redeemable preferred stock, outstanding 39,164 36,840
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 14,750,800 14,715,899
Common stock, outstanding 14,750,800 14,715,899
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