Restructuring Charges (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Restructuring Charges [Abstract]
Restructuring charges	$ 1,393,000	$ 3,106,000	$ 2,252,000	$ 27,439,000
Premises and equipment transferred to other assets held for sale	2,100,000		3,800,000
Asset impairment charges	451,000	1,954,000	1,064,000	5,437,000
Proceeds from sale of other assets held-for-sale	454,000		1,700,000
Assets held-for-sale, at carrying value	7,900,000		7,900,000
Accrued liabilities	$ 914,000		$ 914,000