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Stock-Based Compensation Plans - 2013 Omnibus Equity Incentive Plan - Additional Information (Detail) | 9 Months Ended
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Sep. 30, 2019 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Vested shares | 388,898
2013 Omnibus Equity Incentive Plan [Member] | Options [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of shares issued under compensation plan | 0
Number of shares outstanding under compensation plan | 0
2013 Omnibus Equity Incentive Plan [Member] | Restricted Stock Awards [Member] | Minimum [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Vesting period | 1 year
2013 Omnibus Equity Incentive Plan [Member] | Restricted Stock Awards [Member] | Maximum [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Vesting period | 3 years
2013 Omnibus Equity Incentive Plan [Member] | Restricted Stock Units [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Vesting period | 5 years
Vested shares | 366,476
Number of common stock shares withheld to pay employee statutory withholding taxes | 72,532
2013 Omnibus Equity Incentive Plan [Member] | SARs [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of shares issued under compensation plan | 0
Number of shares outstanding under compensation plan | 0
2013 Omnibus Equity Incentive Plan [Member] | Performance Shares [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of shares issued under compensation plan | 0
Number of shares outstanding under compensation plan | 0
2013 Omnibus Equity Incentive Plan [Member] | Performance Units [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of shares issued under compensation plan | 0
Number of shares outstanding under compensation plan | 0

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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=116856206&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + 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)(2) -URI http://asc.fasb.org/extlink&oid=116856206&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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- Definition Number of shares issued under share-based payment arrangement. + 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 -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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