Derivative Instruments and Hedging Activities (Details Textual) (USD $)	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Jun. 30, 2009	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Interest Rate Caps Purchased			$ 7,100,000
Derivative Cap Fixed Interest Rate			2.97%
Deposits, Money Market Deposits			70,000,000
Derivative Asset, Fair Value, Net	24,000			24,000		250,000
Interest Expense Hedged Deposits				1,500,000	907,000
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax	(479,000)	484,000		(1,259,000)	821,000
Future Interest Expenses on Hedge Deposits				2,400,000
Accounts Payable, Interest-Bearing	$ 428,000			$ 428,000		$ 428,000