NET INCOME PER COMMON SHARE - Dislcosure of Anit-Dilutive Shares (Details) - $ / shares shares in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Restricted Stock Units Service Conditions [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Excluded shares as anti-dilutive under the treasury stock method	3,555	1,586	1,939	1,415
Options Activity [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Excluded shares as anti-dilutive under the treasury stock method	545	563	549	565
Price range of option: from	$ 6.43	$ 9.66	$ 6.43	$ 9.66
Price range of option: to	$ 13.98	$ 13.98	$ 13.98	$ 13.98
Restricted Stock Units Activity [Member] \| Restricted Stock Units Service And Market Conditions But Market Not Met [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Excluded shares as anti-dilutive under the treasury stock method	70	226	70	226

The incremental shares that were excluded as they were anti-dilutive under the treasury stock method.

No definition available.

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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.

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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ 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 (g)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

+ Details

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