Loans (Details 7)	3 Months Ended
Mar. 31, 2015 item loan	Mar. 31, 2014 loan item
Loans
New loans modified as troubled debt restructurings	0	0
Default period contractually past due under modified terms	30 days
Number of defaults on troubled debt restructurings	0	0

Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 34

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953682-111524

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration