Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2012

Commitments and Contingencies Disclosure [Abstract]

Summary of Outstanding Commitments to Extend Credit and Letters of Credit

The outstanding amounts of commitments to extend credit and letters of credit were as follows:

	March 31, 2012		December 31, 2011
	(in thousands)
Commitments to extend credit	$	3,900,856	$	3,803,532
Standby letters of credit	432,225		444,019
Commercial letters of credit	28,795		31,557