CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $)	Dec. 31, 2014	Dec. 31, 2013
Redeemable preferred stock, par value (in dollars per share)	$ 0.60	$ 0.60
Redeemable preferred stock, authorized	200,000us-gaap_PreferredStockSharesAuthorized	200,000us-gaap_PreferredStockSharesAuthorized
Redeemable preferred stock, issued	36,840us-gaap_PreferredStockSharesIssued	37,408us-gaap_PreferredStockSharesIssued
Redeemable preferred stock, outstanding	36,840us-gaap_PreferredStockSharesOutstanding	37,408us-gaap_PreferredStockSharesOutstanding
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	14,715,899	14,686,197
Common stock, outstanding	14,715,899	14,686,197
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

Face amount or stated value per share of common stock.

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