STOCK INCENTIVE PLANS - Stock Options Units Activity (Detail) - $ / shares	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Shares, options outstanding at beginning of period (in shares)	458,354	722,650
Shares, exercised (in shares)	(34,432)	(197,390)
Shares, forfeited/expired (in shares)	(12,042)	(4,598)
Shares, options outstanding and exercisable at end of period (in shares)	411,880	520,662
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted average exercise price, options outstanding at beginning of period (in USD per share)	$ 7.99	$ 7.96
Weighted average exercise price, exercised (in USD per share)	7.86	7.93
Weighted average exercise price, forfeited/expired (in USD per share)	6.52	11.65
Weighted average exercise price, options outstanding and exercisable at end of period (in USD per share)	$ 8.05	$ 7.96

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Number of options outstanding, including both vested and non-vested options.

+ References

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-Publisher FASB
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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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No definition available.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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No definition available.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Number of share options (or share units) exercised during the current period.

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