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Loans, net and allowance for loan losses - Summary of Changes in Accretible Yield and Nonaccretible Difference of Acquired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Loans, net and allowance for loan losses
Beginning Balance, Accretible		$ 60	$ 895
Additions, Accretible	$ 554
Accretion, Accretible	(369)	$ (60)	(280)
Charge-offs, Accretible			(398)
Payments, Accretible			(157)
Ending Balance, Accretible	$ 185		$ 60

X

- Definition

Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Charge Off

+ References

No definition available.

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- Definition

Certain loans acquired in transfer not accounted for as debt securities accretible yield accretion.

+ References

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- Definition

Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretible Yield Payments

+ References

No definition available.

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- Definition

Amount of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538

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- Definition

Amount of additions to the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

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