XML 44 R34.htm IDEA: XBRL DOCUMENT v3.8.0.1
SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Mar. 31, 2017
Dec. 31, 2016
Supplemental Cash Flow Elements [Abstract]        
Cash and cash equivalents $ 40,899 $ 42,920 $ 52,817  
Restricted cash (cash held in escrow) 38,784   30,751  
Restricted cash (certificate of deposits) 10,652      
Restricted cash (held with Trustee) 5,947   2,975  
Total cash and cash equivalents, and restricted cash $ 96,282 $ 88,538 $ 86,543 $ 55,921