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
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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.

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

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
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-Section 15
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

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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, 2016	Dec. 31, 2015	Dec. 31, 2014
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	$ 108,649	$ 247,812
Carrying Value of Acquired Impaired Loans [Roll Forward]
Reductions for repayments, foreclosures and changes in carrying value, net of accretion	(298,602)	(505,058)
Outstanding principal balance	1,266,395	1,693,372
PCI Loans	809,169	950,516	$ 1,186,498
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition	93,178	207,688
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	80,690	154,496
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Accretion	76,565	114,580
Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	499,970	593,614
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	58,934	139,894
Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	309,199	356,902
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	21,756	14,602
Construction and land development \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	20,766	33,880
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	684	4,116
Construction and land development \| Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	340	0
Mortgage \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	453,013	525,468
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	50,372	129,732
Mortgage \| Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	18,934	13,251
Revolving mortgage \| Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	1,238	0
Other commercial real estate \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	12,645	17,076
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	2,629	3,202
Commercial and industrial \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	11,844	15,182
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	3,630	2,844
Other \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	1,702	2,008
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	1,619	0
Consumer \| Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	1,772	2,273
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	1,244	1,351
PCI Loans
Loans and Leases Receivable Disclosure [Abstract]
Nonaccruing	3,451	7,579
PCI Loans \| Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	309,199	356,902
PCI Loans \| Construction and land development \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	20,766	33,880
PCI Loans \| Construction and land development \| Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	0	0
PCI Loans \| Mortgage \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	453,013	525,468
PCI Loans \| Mortgage \| Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	268,777	302,158
PCI Loans \| Revolving mortgage \| Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	38,650	52,471
PCI Loans \| Other commercial real estate \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	12,645	17,076
PCI Loans \| Commercial and industrial \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	11,844	15,182
PCI Loans \| Consumer \| Noncommercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
PCI Loans	$ 1,772	$ 2,273