Affordable Housing Projects Tax Credit Partnership (Details 1) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Proportional Amortization Method
Tax credits and other tax benefits recognized	$ 254	$ 211
Amortization expense in federal income taxes	$ 234	$ 165

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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Balance Type:	debit
Period Type:	duration