Allowance for Non-Covered Loan Loss and Credit Quality (Non-Covered Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	$ 163,584	$ 161,176
Recorded Investment	134,266	142,409
Related Allowance	1,953	1,401
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	124,345	136,472
Recorded Investment	114,553	123,835
Related Allowance	1,937	1,396
Term & Multifamily [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	39,863	49,953
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	46,521	41,016
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	34,307	43,406
Impaired Financing Receivable, with Related Allowance, Recorded Investment	46,521	41,016
Related Allowance	1,713	1,198
Construction & Development [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	12,420	18,526
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	1,091	1,091
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	11,400	15,638
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,091	1,091
Related Allowance	13	14
Residential Development [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	8,729	9,293
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	15,721	16,593
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	5,513	6,091
Impaired Financing Receivable, with Related Allowance, Recorded Investment	15,721	16,593
Related Allowance	211	184
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	38,900	24,507
Recorded Investment	19,375	18,378
Related Allowance	16	0
Term [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	26,198	13,729
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	3,475	0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	11,623	10,532
Impaired Financing Receivable, with Related Allowance, Recorded Investment	3,475	0
Related Allowance	12	0
LOC & Other [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	7,957	10,778
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	1,270	0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	3,007	7,846
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,270	0
Related Allowance	4	0
Residential [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	339	176
Recorded Investment	338	175
Related Allowance	0	5
Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0	0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	289	0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0	0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	289	0
Related Allowance	0	0
Home Equity Loans & Lines [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	50	50
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0	126
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	49	49
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0	126
Related Allowance	0	5
Consumer & Other [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0	21
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0	0
Unpaid Principal Balance	0	21
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0	21
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0	0
Recorded Investment	0	21
Related Allowance	$ 0	$ 0