BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Recently Issued Accounting Pronouncements (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019 USD ($) contract	Jan. 01, 2019 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of lease contracts | contract	1
Right-of use asset	$ 234
Lease liability	$ 234
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of use asset		$ 362
Lease liability		$ 362