Affordable Housing Projects Tax Credit Partnership (Details 1) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Proportional Amortization Method
Tax credits and other tax benefits recognized	$ 276	$ 218	$ 785	$ 640
Amortization expense in federal income taxes	$ 234	$ 173	$ 703	$ 502

Amount of deferred income tax expense (benefit) and income tax credits.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

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Balance Type:	debit
Period Type:	duration