Annual report pursuant to Section 13 and 15(d)

Supplementary Information For Statement of Cash Flows (Details)

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Supplementary Information For Statement of Cash Flows (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Supplementary Information For Statement of Cash Flows        
Cash and cash equivalents $ 7,752 $ 6,372    
Restricted cash 7,463 7,458    
Total $ 15,215 $ 13,830 $ 11,437 $ 9,109