(Tables)

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies Disclosure [Abstract]

Summary of Outstanding Commitments to Extend Credit and Letters of Credit

The following table presents the Corporation’s commitments to extend credit and letters of credit:

	2012		2011
	(in thousands)
Commercial mortgage and construction	$	335,830	$	275,308
Home equity	964,145		1,019,470
Commercial and other	2,711,766		2,508,754
Total commitments to extend credit	$	4,011,741	$	3,803,532
Standby letters of credit	$	425,095	$	444,019
Commercial letters of credit	26,191		31,557
Total letters of credit	$	451,286	$	475,576