Quarterly report pursuant to Section 13 or 15(d)

Cash and Cash Equivalents (Details)

v3.10.0.1
Cash and Cash Equivalents (Details) - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 31, 2017
Jun. 30, 2017
Cash and Cash Equivalents [Abstract]      
Cash on deposit at banks $ 2,649 $ 1,667  
Money market funds 4,881 2,212  
Cash and cash equivalents $ 7,530 $ 3,879 $ 7,320