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.

No definition available.

+ Details

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- Definition

Reserve for loans impairments recorded after acquisition as a result of current information and events which result in it being probable that estimated cash flows will be less than previously expected or because actual cash flows are less than cash flows previously expected. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that was 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 50
-Paragraph 2
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544

Reference 2: 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=82894507&loc=d3e13503-111538

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

- Definition

The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for 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 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544

Reference 2: 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=82894507&loc=d3e13503-111538

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The undiscounted sum of all amounts, including amounts deemed principal, interest, fees, penalties, and other under the loan, owed to the investor at the reporting date, whether or not currently due and whether or not any such amounts have been written or charged off by the investor. This relates to loans not 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=82894507&loc=d3e13503-111538

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Loans and Allowance for Loan Losses - Summary of acquired non credit impaired loans - (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Acquired credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	$ 623,430	$ 605,941	$ 737,576
Less allowance for loan losses	(4,627)	(3,395)	(3,706)	$ (7,365)
Acquired loans, net	618,803	602,546	733,870	919,402
Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	3,507,907	836,699
Acquired credit impaired loans accounted under FASB 310 30
Loans and Allowance for Loan Losses
Carrying value	623,430	605,941
Less allowance for loan losses	(4,627)	(3,395)
Acquired loans, net	618,803	602,546
Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	3,507,907	836,699
Residential real estate
Loans and Allowance for Loan Losses
Carrying value	260,787	258,100
Residential real estate \| Acquired credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	260,787	258,100	313,319
Less allowance for loan losses	(3,553)	(2,419)	(2,986)	(4,387)
Residential real estate \| Acquired credit impaired loans accounted under FASB 310 30
Loans and Allowance for Loan Losses
Carrying value	260,787	258,100
Commercial non-owner occupied real estate \| Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	1,220,523	44,718
Commercial owner occupied real estate loan \| Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	521,818	27,195
Commercial owner occupied real estate loan \| Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	521,818	27,195
Consumer real estate \| Acquired credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	51,453	59,300	70,734
Less allowance for loan losses	(461)	(558)	(313)	(275)
Consumer real estate \| Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	1,031,202	569,149
Consumer real estate \| Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	1,170,201	711,803
Commercial and industrial
Loans and Allowance for Loan Losses
Carrying value	26,946	25,347
Commercial and industrial \| Acquired credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	26,946	25,347	31,193
Less allowance for loan losses	(145)	(238)	(174)	(718)
Commercial and industrial \| Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	398,696	13,641
Commercial and industrial \| Acquired credit impaired loans accounted under FASB 310 30
Loans and Allowance for Loan Losses
Carrying value	26,946	25,347
Commercial and industrial \| Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	398,696	13,641
Other income producing property \| Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	196,669	39,342
Other income producing property \| Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	196,669	39,342
Consumer
Loans and Allowance for Loan Losses
Carrying value	51,453	59,300
Consumer \| Acquired credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	51,453	59,300
Consumer \| Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	137,710	142,654
Consumer \| Acquired credit impaired loans accounted under FASB 310 30
Loans and Allowance for Loan Losses
Carrying value	51,453	59,300
Consumer \| Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	137,710	142,654
Commercial \| Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	2,337,706	124,896
Single pay loans \| Acquired credit impaired loans
Loans and Allowance for Loan Losses
Less allowance for loan losses				(70)
Other loans
Loans and Allowance for Loan Losses
Carrying value	1,289
Other loans \| Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	1,289
Other loans \| Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	1,289
Construction and land development \| Commercial non-owner occupied real estate \| Acquired credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	49,649	44,373	54,272
Less allowance for loan losses	(180)	(139)	(177)	(336)
Construction and land development \| Commercial non-owner occupied real estate \| Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	403,357	10,090
Construction and land development \| Commercial non-owner occupied real estate \| Acquired credit impaired loans accounted under FASB 310 30
Loans and Allowance for Loan Losses
Carrying value	49,649	44,373
Construction and land development \| Commercial non-owner occupied real estate \| Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	403,357	10,090
Other commercial non-owner occupied real estate \| Commercial non-owner occupied real estate \| Acquired credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	234,595	218,821	268,058
Less allowance for loan losses	(288)	(41)	$ (56)	$ (1,579)
Other commercial non-owner occupied real estate \| Commercial non-owner occupied real estate \| Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	817,166	34,628
Other commercial non-owner occupied real estate \| Commercial non-owner occupied real estate \| Acquired credit impaired loans accounted under FASB 310 30
Loans and Allowance for Loan Losses
Carrying value	234,595	218,821
Other commercial non-owner occupied real estate \| Commercial non-owner occupied real estate \| Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	817,166	34,628
Home equity loans \| Consumer real estate \| Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	320,591	160,879
Home equity loans \| Consumer real estate \| Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	320,591	160,879
Other Consumer \| Consumer real estate \| Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	137,710	142,654
Consumer Owner Occupied Loans \| Consumer real estate \| Acquired non-credit impaired loans accounted under FASB 310 20
Loans and Allowance for Loan Losses
Carrying value	710,611	408,270
Consumer Owner Occupied Loans \| Consumer real estate \| Acquired non-credit impaired loans
Loans and Allowance for Loan Losses
Carrying value	$ 710,611	$ 408,270