Mortgage Banking - Changes in the Reserve for Mortgage Loan Servicing Putback Expense (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Schedule of changes in the reserve for mortgage loan [Abstract]
Balance at beginning of period	$ 1,130	$ 1,685
Provision for putback expenses	105	105
Gains (losses)	16	(5)
Balance at end of period	$ 1,251	$ 1,785

Amount of gain (loss) associated with the loan servicing portfolio due to fair value adjustments for loans transferred to portfolio from investor pools or warehouse due to underwriting issues.

No definition available.

+ Details

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- Definition

Amount of expense associated with a loan sold that was in violation of representations or warranties made at the time.

+ References

No definition available.

+ Details

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- Definition

Schedule of changes in the reserve for mortgage loan [Abstract]

+ References

No definition available.

+ Details

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- Definition

Amount of reserve for write-down of a mortgage loan on real estate.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29.7)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

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