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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 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015
--- | --- | --- | --- | ---
Loans - Ending balance: |  |  |  |
Loans and Leases Receivable, Gross | $ 3,037,705 |  |  | $ 2,750,737
Portfolio loans, net |  |  |  |
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items] |  |  |  |
Individually evaluated for impairment | 5,801 |  |  | 2,335
Collectively evaluated for impairment | 31,697 |  |  | 31,106
Total | 37,498 | $ 35,498 | $ 34,373 | 33,441
Loans - Ending balance: |  |  |  |
Individually evaluated for impairment | 21,862 |  |  | 10,878
Collectively evaluated for impairment | 3,015,843 |  |  | 2,739,859
Total | 3,038,137 |  |  | 2,750,446
Loans and Leases Receivable, Gross | 3,037,705 |  |  | 2,750,737
Portfolio loans, net | Commercial and industrial |  |  |  |
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items] |  |  |  |
Individually evaluated for impairment | 3,785 |  |  | 1,953
Collectively evaluated for impairment | 21,623 |  |  | 20,103
Total | 25,408 | 23,808 | 23,161 | 22,056
Loans - Ending balance: |  |  |  |
Individually evaluated for impairment | 13,414 |  |  | 4,514
Collectively evaluated for impairment | 1,585,401 |  |  | 1,479,813
Total | 1,598,815 |  |  | 1,484,327
Portfolio loans, net | Commercial Real Estate Investor Owned |  |  |  |
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items] |  |  |  |
Individually evaluated for impairment | 0 |  |  | 0
Collectively evaluated for impairment | 3,374 |  |  | 3,484
Total | 3,374 | 3,356 | 3,375 | 3,484
Loans - Ending balance: |  |  |  |
Individually evaluated for impairment | 252 |  |  | 921
Collectively evaluated for impairment | 514,803 |  |  | 427,143
Total | 515,055 |  |  | 428,064
Portfolio loans, net | CRE - owner occupied |  |  |  |
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items] |  |  |  |
Individually evaluated for impairment | 0 |  |  | 6
Collectively evaluated for impairment | 2,702 |  |  | 2,963
Total | 2,702 | 2,591 | 3,117 | 2,969
Loans - Ending balance: |  |  |  |
Individually evaluated for impairment | 1,666 |  |  | 1,962
Collectively evaluated for impairment | 339,250 |  |  | 340,997
Total | 340,916 |  |  | 342,959
Portfolio loans, net | Construction and land development |  |  |  |
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items] |  |  |  |
Individually evaluated for impairment | 158 |  |  | 369
Collectively evaluated for impairment | 1,244 |  |  | 1,335
Total | 1,402 | 1,219 | 1,645 | 1,704
Loans - Ending balance: |  |  |  |
Individually evaluated for impairment | 1,907 |  |  | 2,800
Collectively evaluated for impairment | 186,949 |  |  | 158,261
Total | 188,856 |  |  | 161,061
Portfolio loans, net | Residential real estate |  |  |  |
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items] |  |  |  |
Individually evaluated for impairment | 3 |  |  | 7
Collectively evaluated for impairment | 1,963 |  |  | 1,789
Total | 1,966 | 1,797 | 1,841 | 1,796
Loans - Ending balance: |  |  |  |
Individually evaluated for impairment | 124 |  |  | 681
Collectively evaluated for impairment | 233,836 |  |  | 195,817
Total | 233,960 |  |  | 196,498
Portfolio loans, net | Consumer and other |  |  |  |
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items] |  |  |  |
Individually evaluated for impairment | 1,855 |  |  | 0
Collectively evaluated for impairment | 791 |  |  | 1,432
Total | 2,646 | $ 2,727 | $ 1,234 | 1,432
Loans - Ending balance: |  |  |  |
Individually evaluated for impairment | 4,499 |  |  | 0
Collectively evaluated for impairment | 155,604 |  |  | 137,828
Total | 160,535 |  |  | 137,537
Loans and Leases Receivable, Gross | $ 160,103 |  |  | $ 137,828

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- 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) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 + Details
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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + 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 (g) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 + Details
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- Definition 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 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 + Details
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