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Stock-Based Compensation - Performance-Based Restricted Stock Awards (Details) - $ / shares |  | 12 Months Ended
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Feb. 05, 2020 | Dec. 31, 2017
2017 Performance Stock Award Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Vesting period |  | 3 years
Equity instruments other options, grants in period (in shares) | 28,481 |
Equity instruments other than options, grants in period, weighted average grant date fair value (in dollars per share) | $ 12.30 |
2017 Performance Stock Award Plan | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentage of target award |  | 0.00%
2017 Performance Stock Award Plan | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentage of target award |  | 150.00%
2016 Performance Stock Awards Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Vesting period | 3 years |
Equity instruments other options, grants in period (in shares) | 36,647 |
2016 Performance Stock Awards Plan | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentage of target award | 0.00% |
2016 Performance Stock Awards Plan | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentage of target award | 150.00% |
2015 Stock Awards Plan | Stock Awards |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Equity instruments other options, grants in period (in shares) | 45,418 |
Equity instruments other than options, grants in period, weighted average grant date fair value (in dollars per share) | $ 12.995 |

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- Definition 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. + 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 (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued 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=120381028&loc=d3e5070-113901 + Details
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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. + References No definition available. + Details
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