Income Taxes (Details Textual) $ in Thousands	9 Months Ended
Sep. 30, 2017 USD ($)
Income Tax Disclosure [Abstract]
Unrecognized tax benefit	$ 3,242
Federal returns currently under examination	The Company’s federal returns are currently under examination by the Internal Revenue Service (IRS) in the United States for the periods 2007 through 2012

A brief description of status of the tax examination, significant findings to date, and the entity's position with respect to the findings.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (d)(2)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319

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