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v3.19.3.a.u2

Subsequent Events - 2015 Plan Narrative (Details) - Stock Awards - 2015 Stock Awards Plan - $ / shares |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | ---
Feb. 05, 2020 | Feb. 06, 2019 | Feb. 07, 2018 | Feb. 08, 2017 | Dec. 31, 2019 | Dec. 31, 2018
Subsequent Event [Line Items] |  |  |  |  |  |
Granted (in shares) |  | 44,949 | 65,527 | 44,687 |  |
Annual vesting rate |  |  |  |  | 20.00% |
Subsequent Event |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Granted (in shares) | 45,418 |  |  |  |  |
Granted (in dollars per share) | $ 12.995 |  |  |  |  |
Minimum |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Annual vesting rate |  |  |  |  | 20.00% | 20.00%
Minimum | Subsequent Event |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Annual vesting rate | 20.00% |  |  |  |  |
Maximum |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Annual vesting rate |  |  |  |  | 33.00% | 33.00%
Maximum | Subsequent Event |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Annual vesting rate | 33.00% |  |  |  |  |

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- Definition 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). + References 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=116856206&loc=d3e5070-113901 + Details
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