Loans (Troubled debt restructuring on loans modified) (Details) $ in Thousands	3 Months Ended
Mar. 31, 2017 USD ($) loan	Mar. 31, 2016 USD ($) loan
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	3	0
Pre- Modification Recorded Investment	$ 348	$ 0
Post- Modification Recorded Investment	$ 348	$ 0
Commercial
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	0
Pre- Modification Recorded Investment	$ 0	$ 0
Post- Modification Recorded Investment	$ 0	$ 0
Commercial \| Commercial
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	0
Pre- Modification Recorded Investment	$ 0	$ 0
Post- Modification Recorded Investment	$ 0	$ 0
Commercial \| Commercial real estate
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	0
Pre- Modification Recorded Investment	$ 0	$ 0
Post- Modification Recorded Investment	$ 0	$ 0
Agricultural and agricultural real estate
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	0
Pre- Modification Recorded Investment	$ 0	$ 0
Post- Modification Recorded Investment	$ 0	$ 0
Residential real estate
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	3	0
Pre- Modification Recorded Investment	$ 348	$ 0
Post- Modification Recorded Investment	$ 348	$ 0
Consumer
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	0
Pre- Modification Recorded Investment	$ 0	$ 0
Post- Modification Recorded Investment	$ 0	$ 0

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524

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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

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