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Federally Assisted Acquisition Of United Western Bank (Narrative) (Details) (USD $)	0 Months Ended	6 Months Ended		6 Months Ended																	3 Months Ended	6 Months Ended
	Jan. 21, 2011	Jun. 30, 2011	Jul. 08, 2011	Jun. 30, 2011 Minimum [Member] 0% Of Combined Covered Loan Losses [Member]	Jun. 30, 2011 Minimum [Member] Residential Mortgage Loans [Member]	Jun. 30, 2011 Minimum [Member] Other Loans [Member]	Jun. 30, 2011 Maximum [Member] FDIC [Member]	Jun. 30, 2011 Maximum [Member] OREO [Member]	Jun. 30, 2011 Maximum [Member] 0% Of Combined Covered Loan Losses [Member]	Jun. 30, 2011 Maximum [Member] Residential Mortgage Loans [Member]	Jun. 30, 2011 Maximum [Member] Other Loans [Member]	Jun. 30, 2011 Intrinsic Loss [Member]	Jun. 30, 2011 Net Loss Amount [Member]	Jun. 30, 2011 Asset Discount [Member]	Jun. 30, 2011 Shared Loss Assets [Member]	Jun. 30, 2011 FDIC [Member]	Jun. 30, 2011 OREO [Member]	Jun. 30, 2011 80% Of Combined Covered Loan Losses [Member]	Jun. 30, 2011 0% Of Combined Covered Loan Losses [Member]	Jun. 30, 2011 80% Of Combined Covered Loan Losses In Excess Of Stated Amount [Member]	Mar. 31, 2011 Acquisition Related [Member]	Jun. 30, 2011 Residential Mortgage Loans [Member]	Jun. 30, 2011 Other Loans [Member]	Jun. 30, 2011 United Western Bank [Member]
Discount on aggregate assets	$ 213,000,000
Deposit premium	0
Number of branches	8
Loss cover, percentage					0.00%	30.00%				80.00%	80.00%					80.00%	80.00%
Loss cover, amount					32,489,000	111,517,000	57,653,000	227,032,000		57,653,000	227,032,000					32,489,000	111,517,000
True-up payment percentage excess		50.00%
Total intrinsic loss		294,000,000
True-up payment percentage												20.00%	20.00%	25.00%	3.50%
True-up payment amount												58,800,000		52,898,000	37,936,000
Estimated future true-up payment																								11,423,000
Loss share agreement, term																						10	5
Loss share agreement, term in respect to loss recoveries																						10	5
Adjusted Gain		64,984
Bargain purchase gains																					64,984,000
Deferred tax liability																					25,448,000
FDIC repurchased loans		18
Agreement To Purchase Assets And Liabilities Amount			154,900
Combined Covered Losses				230,991					285,947									230,991		285,947
Percent Of FDIC Coverage																		80.00%	0.00%	80.00%
Deposit Premium Amount			0
Cash From FDIC At Settlement		$ 103,478

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In a business combination in which the amount of net identifiable assets acquired and liabilities assumed exceeds the aggregate consideration transferred or to be transferred (as defined), this element represents the amount of gain recognized by the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 36, 37, 38

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
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The cumulative amount for all deferred tax liabilities as of the balance sheet date arising from temporary differences between accounting income in accordance with generally accepted accounting principles and tax-basis income that will result in future taxable income exceeding future accounting income.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Number 109
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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