Portfolio Loans - Summary of Allowance for Loan Losses by Portfolio Class and Category (Details) - Portfolio loans, net - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016
Allowance for Loan Losses [Roll Forward]
Balance at December 31, 2015	$ 35,498	$ 34,373	$ 33,441
Provision (provision reversal) charged to expense	3,038	716	833
Losses charged off	(2,073)	(163)	(73)
Recoveries	1,035	572	172
Balance at March 31, 2016	37,498	35,498	34,373
Commercial and industrial
Allowance for Loan Losses [Roll Forward]
Balance at December 31, 2015	23,808	23,161	22,056
Provision (provision reversal) charged to expense	3,575	302	1,120
Losses charged off	(2,044)	(157)	(68)
Recoveries	69	502	53
Balance at March 31, 2016	25,408	23,808	23,161
CRE - owner occupied
Allowance for Loan Losses [Roll Forward]
Balance at December 31, 2015	2,591	3,117	2,969
Provision (provision reversal) charged to expense	94	541	80
Losses charged off	0	0	0
Recoveries	17	15	68
Balance at March 31, 2016	2,702	2,591	3,117
Commercial Real Estate Investor Owned
Allowance for Loan Losses [Roll Forward]
Balance at December 31, 2015	3,356	3,375	3,484
Provision (provision reversal) charged to expense	10	27	(116)
Losses charged off	0	0	0
Recoveries	8	8	7
Balance at March 31, 2016	3,374	3,356	3,375
Construction and land development
Allowance for Loan Losses [Roll Forward]
Balance at December 31, 2015	1,219	1,645	1,704
Provision (provision reversal) charged to expense	730	434	(65)
Losses charged off	0	0	0
Recoveries	913	8	6
Balance at March 31, 2016	1,402	1,219	1,645
Residential real estate
Allowance for Loan Losses [Roll Forward]
Balance at December 31, 2015	1,797	1,841	1,796
Provision (provision reversal) charged to expense	168	(80)	11
Losses charged off	(25)	0	0
Recoveries	26	36	34
Balance at March 31, 2016	1,966	1,797	1,841
Consumer and other
Allowance for Loan Losses [Roll Forward]
Balance at December 31, 2015	2,727	1,234	1,432
Provision (provision reversal) charged to expense	79	1,496	(197)
Losses charged off	(4)	(6)	(5)
Recoveries	2	3	4
Balance at March 31, 2016	$ 2,646	$ 2,727	$ 1,234

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

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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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No definition available.

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Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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Amount of direct write-downs of financing receivables charged against the allowance.

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ 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)(2)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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