Covered Assets and Indemnification Asset (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012 risk_rating	Jun. 30, 2013 Evergreen Bank [Member]	Dec. 31, 2012 Evergreen Bank [Member]	Jun. 30, 2013 Rainier Pacific Bank [Member]	Dec. 31, 2012 Rainier Pacific Bank [Member]	Jun. 30, 2013 Nevada Security Bank [Member]	Dec. 31, 2012 Nevada Security Bank [Member]
Business Acquisition [Line Items]
Outstanding unpaid principal of covered loans					$ 115.7	$ 137.7	$ 258.3	$ 297.0	$ 165.9	$ 198.4
Recaptured provision on covered loans	$ 4.1	$ 2.3	$ 5.7	$ 3.5
Range of risk rating for loans and leases, minimum				1
Range of risk rating for loans and leases, maximum				10