Allowance for Loan and Lease Losses (Composition of the Company's allowance for loan and lease losses) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	$ 60,360		$ 54,298
Loans And Leases Receivable Allowance, Covered	59,515	54,398	52,729	53,993	52,974	54,124
Loans And Leases Receivable Allowance Covered and Not Covered	119,875		107,027
Non Covered Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	60,360		54,298
Originated Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	50,638		49,081
Originated Loans [Member] \| Residential Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	19,062		19,937
Originated Loans [Member] \| Commercial Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	12,423		14,897
Originated Loans [Member] \| Consumer Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	7,887		6,006
Originated Loans [Member] \| Auto and Leasing Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	11,127		7,866
Originated Loans [Member] \| Unallocated Financing Receivables
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	139		375
Non-covered acquired loans accounted for under ASC 310-20
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	3,444		2,354
Non-covered acquired loans accounted for under ASC 310-20 \| Commercial Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	464		926
Non-covered acquired loans accounted for under ASC 310-20 \| Consumer Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	338		0
Non-covered acquired loans accounted for under ASC 310-20 \| Auto and Leasing Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	2,642		1,428
Accounted for under ASC 310-30 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	6,278		2,863
Accounted for under ASC 310-30 [Member] \| Commercial Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	6,216		1,713
Accounted for under ASC 310-30 [Member] \| Consumer Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	62		418
Accounted for under ASC 310-30 [Member] \| Automobile Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	0		732
Acquired Loans In An F D I C Assisted Transaction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans And Leases Receivable Allowance, Covered	59,515		52,729
Acquired Loans In An F D I C Assisted Transaction [Member] \| Consumer Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans And Leases Receivable Allowance, Covered	615		615
Acquired Loans In An F D I C Assisted Transaction [Member] \| Loans Secured by multi-family properties [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans And Leases Receivable Allowance, Covered	14,924		12,495
Acquired Loans In An F D I C Assisted Transaction [Member] \| Commercial and Other Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans And Leases Receivable Allowance, Covered	$ 43,976		$ 39,619