Basis of Presentation and Significant Accounting Policies (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jan. 01, 2017
Deferred tax asset increase	$ 18,270
Accounting Standards Update 2016-09
Deferred tax asset increase		$ 1,500
Retained Earnings \| Accounting Standards Update 2016-09
Retained earnings increase		$ 1,500

Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319

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