v3.20.1
STATEMENTS OF CASH FLOWS Table 3 - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Mar. 31, 2019
Dec. 31, 2018
Restricted Cash and Cash Equivalents Items [Line Items]        
Cash and cash equivalents $ 17,694 $ 16,192    
Cash, cash equivalents and restricted cash 26,492 24,980 $ 24,534 $ 13,644
Cash and cash equivalents [Member]        
Restricted Cash and Cash Equivalents Items [Line Items]        
Cash and cash equivalents 17,694 16,192    
Other long-term assets, net [Member]        
Restricted Cash and Cash Equivalents Items [Line Items]        
Cash, cash equivalents and restricted cash $ 8,798 $ 8,788