Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2011	Dec. 31, 2010
Shareholders' equity:
Common stock, par value (in dollars per shares)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	443,226	443,226
Common stock, shares outstanding (in shares)	405,096	405,096
Treasury stock, at cost, shares (in shares)	38,130	38,130
Preferred A Shares
Shareholders' equity:
Preferred stock, par value (in dollars per shares)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	258,236	258,236
Preferred stock, shares outstanding (in shares)	258,236	258,236
Preferred stock, liquidation preference (in dollars per shares)	$ 10.00	$ 10.00
Preferred C Shares
Shareholders' equity:
Preferred stock, par value (in dollars per shares)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	300,000	300,000
Preferred stock, shares issued (in shares)	244,444	244,444
Preferred stock, shares outstanding (in shares)	244,444	244,444
Preferred stock, liquidation preference (in dollars per shares)	$ 10.00	$ 10.00