Employee Benefit Plan (Details) - USD ($) $ in Millions		12 Months Ended
Feb. 02, 2007	Dec. 31, 2016	Dec. 31, 2015
Postemployment Benefits [Abstract]
Defined Contribution Plan, Employer Discretionary Contribution Amount		$ 0.1	$ 0.0
Postemployment benefit, attained age	21 years

Amount of discretionary contributions made by an employer to a defined contribution plan.

No definition available.

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