Allowance for Non-Covered Loan Loss and Credit Quality (Schedule of Average Recorded Investment and Interest Income Recognized) (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Average Recorded Investment	$ 200,093	$ 266,325	$ 219,969	$ 286,898
Interest Income Recognized	831	804	1,458	1,542
Commercial [Member] | LOC & Other [Member] | With No Related Allowance Recorded [Member]
Average Recorded Investment	17,978	42,009	24,724	46,905
Commercial [Member] | Term [Member] | With No Related Allowance Recorded [Member]
Average Recorded Investment	8,307	10,768	8,678	10,673
Commercial Real Estate [Member] | Residential Development [Member] | With No Related Allowance Recorded [Member]
Average Recorded Investment	37,841	31,695	37,762	39,438
Commercial Real Estate [Member] | Construction & Development [Member] | With No Related Allowance Recorded [Member]
Average Recorded Investment	21,063	24,668	23,238	28,665
Commercial Real Estate [Member] | Term & Multifamily [Member] | With No Related Allowance Recorded [Member]
Average Recorded Investment	54,086	57,851	54,725	60,241
Residential [Member] | With No Related Allowance Recorded [Member] | Mortgage [Member]
Average Recorded Investment
Interest Income Recognized
Residential [Member] | With No Related Allowance Recorded [Member] | Home Equity Loans & Lines [Member]
Average Recorded Investment
Interest Income Recognized
Residential [Member] | With No Related Allowance Recorded [Member] | Consumer & Other [Member]
Average Recorded Investment
Interest Income Recognized
Commercial [Member] | LOC & Other [Member] | With an Allowance Recorded [Member]
Average Recorded Investment	2,857		2,532	200
Interest Income Recognized		4		8
Commercial [Member] | Term [Member] | With an Allowance Recorded [Member]
Average Recorded Investment	202	225	268	296
Interest Income Recognized	11	12	23	24
Commercial Real Estate [Member] | Residential Development [Member] | With an Allowance Recorded [Member]
Average Recorded Investment	32,943	60,605	40,165	60,053
Interest Income Recognized	320	506	670	937
Commercial Real Estate [Member] | Construction & Development [Member] | With an Allowance Recorded [Member]
Average Recorded Investment	8,905	4,264	6,506	2,843
Interest Income Recognized	266		338
Commercial Real Estate [Member] | Term & Multifamily [Member] | With an Allowance Recorded [Member]
Average Recorded Investment	15,733	29,731	19,995	32,856
Interest Income Recognized	233	220	424	451
Residential [Member] | Mortgage [Member] | With an Allowance Recorded [Member]
Average Recorded Investment	178	4,474	1,369	4,705
Interest Income Recognized	1	62	3	121
Residential [Member] | Home Equity Loans & Lines [Member] | With an Allowance Recorded [Member]
Average Recorded Investment		35	7	23
Interest Income Recognized				1
Residential [Member] | Consumer & Other [Member] | With an Allowance Recorded [Member]
Average Recorded Investment
Interest Income Recognized
Commercial [Member]
Average Recorded Investment	29,344	53,002	36,202	58,074
Interest Income Recognized	11	16	23	32
Consumer & Other [Member]
Average Recorded Investment
Interest Income Recognized
Commercial Real Estate [Member]
Average Recorded Investment	170,571	208,814	182,391	224,096
Interest Income Recognized	819	726	1,432	1,388
Residential [Member]
Average Recorded Investment	178	4,509	1,376	4,728
Interest Income Recognized	$ 1	$ 62	$ 3	$ 122