Quarterly report pursuant to Section 13 or 15(d)

BASIS OF PRESENTATION AND ACCOUNTING POLICY Supplemental Cash Flow Information (Details)

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BASIS OF PRESENTATION AND ACCOUNTING POLICY Supplemental Cash Flow Information (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Jun. 30, 2018
Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Cash and cash equivalents $ 88,430 [1] $ 50,753 [1] $ 15,057 $ 13,583
Escrow deposits 0 0 0 3,250
Total cash, cash equivalents and restricted cash shown in the Consolidated Statement of Cash Flows $ 88,430 $ 50,753 $ 15,057 $ 16,833
[1] Refer to footnote 5 for more detail on variable interest entities (“VIE”)