Stockholders' Equity - Schedule of Common Stock Reserved for Future Issuance (Parenthetical) (Details) - Common Stock - shares |
3 Months Ended | 5 Months Ended | 9 Months Ended | 14 Months Ended |
|---|---|---|---|---|
Sep. 30, 2018 |
Dec. 31, 2017 |
Sep. 30, 2018 |
Sep. 30, 2018 |
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| Class Of Stock [Line Items] | ||||
| Stock repurchase, shares | 135,000 | |||
| Share Repurchase Program August 2017 | ||||
| Class Of Stock [Line Items] | ||||
| Stock repurchase, shares | 42,995 | 193,523 | 328,523 |
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- Definition 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.
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- Definition Number of shares that have been repurchased during the period and are being held in treasury. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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