REVENUE FROM CONTRACTS WITH CUSTOMERS, Transaction Price Allocated to Remaining Performance Obligations (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Revenue, Performance Obligation [Abstract]
Revenue expected to be recognized on contract liability amounts as of December 31, 2018	$ 1,928
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01
Revenue, Performance Obligation [Abstract]
Revenue expected to be recognized on contract liability amounts as of December 31, 2018	$ 482
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01 | Maximum [Member]
Revenue, Performance Obligation [Abstract]
Revenue expected to be recognized on contract liability, satisfaction period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Performance Obligation [Abstract]
Revenue expected to be recognized on contract liability amounts as of December 31, 2018	$ 1,083
Revenue expected to be recognized on contract liability, satisfaction period	2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Performance Obligation [Abstract]
Revenue expected to be recognized on contract liability amounts as of December 31, 2018	$ 363
Revenue expected to be recognized on contract liability, satisfaction period	3 years