Fair Value Measurement (Details Textual)	9 Months Ended
Sep. 30, 2017 USD ($)
Fair Value Measurement (Textual)
Fair value adjustments	$ 221,000

Amount of addition (reduction) to the amount at which an asset could be incurred (settled) in a current transaction between willing parties.

No definition available.

Name:	us-gaap_AssetsFairValueAdjustment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration