BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Recently Issued Accounting Pronouncements (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) contract	Jan. 01, 2019 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of lease contracts | contract	1
Lease liability	$ 298
Right-of use asset and lease liability	$ 298
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Lease liability		$ 362
Right-of use asset and lease liability		$ 362