Commitments and Contingencies (Details) $ in Thousands	9 Months Ended
Sep. 30, 2017 USD ($) settlement	Apr. 21, 2014 USD ($)
Loss Contingencies [Line Items]
Number of claims settled \| settlement	2
Pending Litigation [Member] \| Unfavorable Regulatory Action [Member]
Loss Contingencies [Line Items]
Possible amount of claims in settlement for compliance violations		$ 100
Settled Litigation [Member]
Loss Contingencies [Line Items]
Amount of settlement for compliance violations	$ 192

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14557-108349

Name:	us-gaap_LossContingencyEstimateOfPossibleLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant