Employee Benefit Plans - Additional Information (Details)	6 Months Ended
Jun. 30, 2018
Defined Benefit Plan Disclosure [Line Items]
Defined contribution retirement plan, plan name	401(k) plan
401(k) Plan
Defined Benefit Plan Disclosure [Line Items]
Defined contribution retirement plan, maximum employee contribution deferred	100.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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