Quarterly report pursuant to Section 13 or 15(d)

Cash and Cash Equivalents (Details)

v3.19.1
Cash and Cash Equivalents (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Mar. 31, 2018
Cash and Cash Equivalents [Abstract]      
Cash on deposit at banks $ 1,956 $ 1,936  
Money market funds 1,960 4,436  
Cash and cash equivalents $ 3,916 $ 6,372 $ 9,169