REVENUE FROM CONTRACTS WITH CUSTOMERS - Transaction Price Allocated to Remaining Performance Obligations (Details) $ in Thousands	Jun. 30, 2020 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue expected to be recognized on contract liability amounts as of end of period	$ 2,445
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue expected to be recognized on contract liability amounts as of end of period	$ 1,426
Revenue, Performance Obligation [Abstract]
Revenue expected to be recognized on contract liability, satisfaction period	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue expected to be recognized on contract liability amounts as of end of period	$ 1,019
Revenue, Performance Obligation [Abstract]
Revenue expected to be recognized on contract liability, satisfaction period	2 years