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SIGNIFICANT ACCOUNTING POLICIES - Stock-Based Compensation (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (in shares)	0	0	0	0
Stock option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
Stock option \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
Restricted stock \| Vesting period one
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			6 years
Restricted stock \| Vesting period two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			6 months
2007 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for award (in shares)					1,585,000
2017 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for award (in shares)	1,789,647		1,789,647