Share Based Compensation Arrangement By Share Based Payment Award Fair Value Of Shares Vested During Year

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Amount of cost capitalized for award under share-based payment arrangement.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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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.

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- Definition

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

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Gross number of share options (or share units) granted during the period.

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Percentage of vesting of award under share-based payment arrangement.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Weighted average grant-date fair value of options vested.

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Number of shares issued during the period as a result of the conversion of convertible securities.

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Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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SHARE BASED COMPENSATION - Narrative (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	May 06, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options issued (in shares)			395,298
Revere acquisition
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options issued (in shares)			395,298
Weighted average grant date fair value (in dollars per share)			$ 9.14
2015 Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares)					1,500,000
Shares available for issuance (in shares)	908,499		908,499
Expiration period			10 years
Award vesting rights, percentage			100.00%
2015 Omnibus Incentive Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise period			7 years
2015 Omnibus Incentive Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise period			10 years
2015 Omnibus Incentive Plan \| Stock Options and Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized compensation expense	$ 1.0	$ 0.7	$ 2.8	$ 2.1
2015 Omnibus Incentive Plan \| Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of shares vested			$ 0.1	$ 0.2
Granted (in shares)	0		0
2015 Omnibus Incentive Plan \| Restricted shares, Restricted stock units and Performance share units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	$ 9.1		$ 9.1
Expected cost recognition weighted average period			2 years 9 months 18 days
Shares issued (in shares)			246,015
2015 Omnibus Incentive Plan \| Performance Shares \| 3 Year Vesting Period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in shares)			44,905
2015 Omnibus Incentive Plan \| Time Based Shares \| 3 or 5 Year Vesting Period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in shares)			201,110