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Portfolio Loans - Summary of Recorded Investment in Portfolio Loans by Class and Category Based on Impairment Method (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loans - Ending balance:
Portfolio loans	$ 3,118,392	$ 2,750,737
Non-Covered Loans
Balance December 31, 2016
Individually evaluated for impairment	3,064	2,335
Collectively evaluated for impairment	34,501	31,106
Total	37,565	33,441	$ 30,185	$ 27,289
Loans - Ending balance:
Individually evaluated for impairment	16,772	10,878
Collectively evaluated for impairment	3,101,620	2,739,859
Portfolio loans	3,118,392	2,750,737
Total	3,119,154	2,750,446
Non-Covered Loans | Commercial and industrial
Balance December 31, 2016
Individually evaluated for impairment	2,909	1,953
Collectively evaluated for impairment	24,087	20,103
Total	26,996	22,056	16,983	12,246
Loans - Ending balance:
Individually evaluated for impairment	12,523	4,514
Collectively evaluated for impairment	1,620,191	1,479,813
Total	1,632,714	1,484,327
Non-Covered Loans | CRE - investor owned
Balance December 31, 2016
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	3,420	3,484
Total	3,420	3,484	4,382	6,600
Loans - Ending balance:
Individually evaluated for impairment	430	921
Collectively evaluated for impairment	544,378	427,143
Total	544,808	428,064
Non-Covered Loans | CRE - owner occupied
Balance December 31, 2016
Individually evaluated for impairment	0	6
Collectively evaluated for impairment	2,890	2,963
Total	2,890	2,969	3,135	4,096
Loans - Ending balance:
Individually evaluated for impairment	1,854	1,962
Collectively evaluated for impairment	348,294	340,997
Total	350,148	342,959
Non-Covered Loans | Construction and land development
Balance December 31, 2016
Individually evaluated for impairment	155	369
Collectively evaluated for impairment	1,149	1,335
Total	1,304	1,704	1,715	2,136
Loans - Ending balance:
Individually evaluated for impairment	1,903	2,800
Collectively evaluated for impairment	192,639	158,261
Total	194,542	161,061
Non-Covered Loans | Residential real estate
Balance December 31, 2016
Individually evaluated for impairment	0	7
Collectively evaluated for impairment	2,023	1,789
Total	2,023	1,796	2,830	2,019
Loans - Ending balance:
Individually evaluated for impairment	62	681
Collectively evaluated for impairment	240,698	195,817
Total	240,760	196,498
Non-Covered Loans | Consumer and other
Balance December 31, 2016
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	932	1,432
Total	932	1,432	$ 1,140	$ 192
Loans - Ending balance:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	155,420	137,828
Portfolio loans	155,420	137,828
Total	$ 156,182	$ 137,537

X

- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
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+ References

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-Publisher FASB
-Name Accounting Standards Codification
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+ References

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-Topic 310
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-Topic 310
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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
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+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
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