Carrying Value of Acquired Impaired Loans [Roll Forward]

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Reductions for repayments foreclosures and decreases in fair value

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Current period recognition due to accretion of the excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan for loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538

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- Definition

Fair value at acquisition of acquired loans accounted for as debt securities with evidence of deterioration of credit quality.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
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-URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538

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- Definition

Amount of cash flows expected to be collected at acquisition of acquired loans accounted for as debt securities with evidence of deterioration of credit quality.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538

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- Definition

Amount of contractually required payments receivable at acquisition of acquired loans accounted for as debt securities with evidence of deterioration of credit quality.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

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The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and other-than-temporary impairments), for loans accounted for as debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
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- Definition

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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- Definition

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Loans and Leases (Changes In Carrying Value Of Acquired Impaired Loans) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Feb. 13, 2015	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition	$ 247,812	$ 828,156
Carrying Value of Acquired Impaired Loans [Roll Forward]
Reductions for repayments, foreclosures and changes in carrying value, net of accretion	(505,058)	(578,704)
Outstanding principal balance	1,693,372	2,057,691
PCI Loans	950,516	1,186,498		$ 1,029,426
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition	207,688	735,381
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	154,496	623,408	$ 154,496
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Accretion	114,580	112,368
Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	593,614	726,123
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	139,894	301,857
Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	356,902	460,375
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	14,602	321,551
Construction and land development \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	33,880	78,079
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	4,116	69,789
Construction and land development \| Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	0	912
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	0	199
Mortgage \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	525,468	577,518
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	129,732	176,841
Mortgage \| Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	302,158	382,340
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	13,251	287,675
Revolving mortgage \| Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	52,471	74,109
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	0	29,777
Other commercial real estate \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	17,076	40,193
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	3,202	15,425
Commercial and industrial \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	15,182	27,254
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	2,844	37,583
Other \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	2,008	3,079
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	0	2,219
Consumer \| Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	2,273	3,014
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	1,351	3,900
PCI Loans
Loans and Leases Receivable Disclosure [Abstract]
Nonaccruing	7,579	33,422
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans		1,186,498
PCI Loans \| Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	356,902	460,375
PCI Loans \| Construction and land development \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	33,880	78,079
PCI Loans \| Construction and land development \| Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	0	912
PCI Loans \| Mortgage \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	525,468	577,518
PCI Loans \| Mortgage \| Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	302,158	382,340
PCI Loans \| Revolving mortgage \| Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	52,471	74,109
PCI Loans \| Other commercial real estate \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	17,076	40,193
PCI Loans \| Commercial and industrial \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	15,182	27,254
PCI Loans \| Consumer \| Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	$ 2,273	$ 3,014