Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2013

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, 2013		December 31, 2012
	(in thousands)
Commitments to extend credit	$	4,096,386	$	4,011,741
Standby letters of credit	418,963		425,095
Commercial letters of credit	33,585		26,191