Derivatives (Tables)

3 Months Ended

Mar. 31, 2012

Derivatives [Abstract]

Fair values of derivative instruments on balance sheet

	Tabular Disclosure of Fair Values of Derivative Instruments
	Asset Derivatives								Liability Derivatives
	As of March 31, 2012				As of December 31, 2011				As of March 31, 2012				As of December 31, 2011
	Balance Sheet Location		Fair Value		Balance Sheet Location		Fair Value		Balance Sheet Location		Fair Value		Balance Sheet Location		Fair Value
Derivatives designated as hedging instruments
Interest rate products		Other assets	$	—		Other assets	$	—		Other liabilities	$	410		Other liabilities	$	107
Total derivatives designated as hedging instruments			$	—			$	—			$	410			$	107
Derivatives not designated as hedging instruments
Interest rate products		Other assets	$	14,845		Other assets	$	14,952		Other liabilities	$	15,246		Other liabilities	$	15,536
Total derivatives not designated as hedging instruments			$	14,845			$	14,952			$	15,246			$	15,536