Stock-Based Compensation and Stockholder's Equity - Schedule of Share-based Compensation, Restricted Stock Units Activity (Parenthetical) (Details) - Restricted Stock Units (RSUs)	3 Months Ended
Mar. 31, 2019 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
RSUs granted	352,869
Non-Employee Members of BOD
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
RSUs granted	30,135

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration