Allowance for Loan and Lease Losses (Composition of the Company's allowance for loan and lease losses) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	$ 56,183	$ 54,298
Loans And Leases Receivable Allowance, Covered	54,398	52,729	52,974	54,124
Loans And Leases Receivable Allowance Covered and Not Covered	110,581	107,027
Non Covered Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	56,183	54,298
Originated Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	49,507	49,081
Originated Loans [Member] \| Residential Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	19,511	19,937
Originated Loans [Member] \| Commercial Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	13,994	14,897
Originated Loans [Member] \| Consumer Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	7,135	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	8,731	7,866
Originated Loans [Member] \| Unallocated Financing Receivables
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	136	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	3,618	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	867	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	504	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	2,247	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	3,058	2,863
Accounted for under ASC 310-30 [Member] \| Residential Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	0	0
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	2,653	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	405	418
Accounted for under ASC 310-30 [Member] \| Construction
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, non covered	0	0
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	54,398	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	14,221	12,495
Acquired Loans In An F D I C Assisted Transaction [Member] \| Construction and development secured by multi-family properties [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans And Leases Receivable Allowance, Covered	0	0
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	39,562	39,619
Acquired Loans In An F D I C Assisted Transaction [Member] \| Leasing
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans And Leases Receivable Allowance, Covered	$ 0	$ 0