Loans - Average Recorded Investments and Interest Recognized (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Financing Receivable, Impaired [Line Items]
Average recorded investment	$ 2,485	$ 6,008
Interest income recognized on impaired loans	16	40
SBA loans held for investment
Financing Receivable, Impaired [Line Items]
Average recorded investment	998	2,004
Interest income recognized on impaired loans	(6)	2
SBA 504 loans
Financing Receivable, Impaired [Line Items]
Average recorded investment	329	1,652
Interest income recognized on impaired loans	0	0
Commercial loans \| Other
Financing Receivable, Impaired [Line Items]
Average recorded investment	25	62
Interest income recognized on impaired loans	0	25
Commercial loans \| Commercial real estate
Financing Receivable, Impaired [Line Items]
Average recorded investment	1,133	2,052
Interest income recognized on impaired loans	22	13
Commercial loans \| Commercial real estate construction
Financing Receivable, Impaired [Line Items]
Average recorded investment	0	238
Interest income recognized on impaired loans	0	0
Small Business Administration
Financing Receivable, Impaired [Line Items]
Impaired financing receivable average recorded investment, guaranteed by Small Business Administration	$ 248	$ 265

Impaired Financing Receivable Average Recorded Investment, Guaranteed by the Small Business Administration

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+ References

No definition available.

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- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5258-111524

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

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