Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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 (a)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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No definition available.

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Number of shares authorized for issuance under share-based payment arrangement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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Stock-Based Compensation - Plan Information (Details) - shares		9 Months Ended
	May 14, 2010	Sep. 30, 2019
2010 Plan
Stock-Based Compensation
Common stock authorized for issuance (in shares)	8,000,000	0
2010 Plan \| Minimum
Stock-Based Compensation
Vesting period	3 years
2010 Plan \| Maximum
Stock-Based Compensation
Vesting period	5 years
2016 Plan
Stock-Based Compensation
Common stock authorized for issuance (in shares)		9,500,000
2016 Plan \| Minimum
Stock-Based Compensation
Vesting period		1 year
2016 Plan \| Maximum
Stock-Based Compensation
Vesting period		4 years