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Portfolio Loans - Summary of Aging of Recorded Investment in Past Due Portfolio Loans by Portfolio Class and Category (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Loans, including unearned loan fees | $ 4,097,050 | $ 3,158,161
Non-Covered Loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
30-89 Days Past Due | 10,828 | 999
Financing Receivable, Recorded Investment, 90 Days Past Due | 2,715 | 2,099
Total Past Due | 13,543 | 3,098
Current | 4,009,353 | 3,115,294
Total | 4,024,221 | 3,119,154
Loans, including unearned loan fees | 4,022,896 | 3,118,392
Non-Covered Loans | Commercial and industrial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
30-89 Days Past Due | 7,882 | 334
Financing Receivable, Recorded Investment, 90 Days Past Due | 1,770 | 171
Total Past Due | 9,652 | 505
Current | 1,909,068 | 1,632,209
Total | 1,918,720 | 1,632,714
Non-Covered Loans | CRE - investor owned |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
30-89 Days Past Due | 934 | 0
Financing Receivable, Recorded Investment, 90 Days Past Due | 0 | 175
Total Past Due | 934 | 175
Current | 768,341 | 544,633
Total | 769,275 | 544,808
Non-Covered Loans | CRE - owner occupied |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
30-89 Days Past Due | 0 | 212
Financing Receivable, Recorded Investment, 90 Days Past Due | 0 | 225
Total Past Due | 0 | 437
Current | 554,589 | 349,711
Total | 554,589 | 350,148
Non-Covered Loans | Construction and land development |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
30-89 Days Past Due | 76 | 355
Financing Receivable, Recorded Investment, 90 Days Past Due | 0 | 1,528
Total Past Due | 76 | 1,883
Current | 303,015 | 192,659
Total | 303,091 | 194,542
Non-Covered Loans | Residential real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
30-89 Days Past Due | 1,529 | 91
Financing Receivable, Recorded Investment, 90 Days Past Due | 945 | 0
Total Past Due | 2,474 | 91
Current | 338,838 | 240,669
Total | 341,312 | 240,760
Non-Covered Loans | Consumer and other |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
30-89 Days Past Due | 407 | 7
Financing Receivable, Recorded Investment, 90 Days Past Due | 0 | 0
Total Past Due | 407 | 7
Current | 135,502 | 155,413
Total | 137,234 | 156,182
Loans, including unearned loan fees | $ 135,909 | $ 155,420

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- Definition Financing Receivable, Recorded Investment, 90 Days Past Due + References No definition available. + Details
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- Definition Financing receivables that are current. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524 + Details
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- Definition Recorded Investment in financing receivables that are past due at the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524 + 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=82891408&loc=d3e4428-111522 + Details
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- Definition Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10(3)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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