Derivatives (Details) - Summary of net gains (losses) recorded in accumulated other comprehensive income and statements of income relating to cash flow derivative instruments $ in Thousands	6 Months Ended
Jun. 30, 2015 USD ($)
Interest Rate Contract [Member]
Derivatives (Details) - Summary of net gains (losses) recorded in accumulated other comprehensive income and statements of income relating to cash flow derivative instruments [Line Items]
Interest rate contracts	$ (298)

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

Name:	us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration