XML 53 R41.htm IDEA: XBRL DOCUMENT v3.10.0.1
Fair Value Measurements (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Jun. 30, 2018
Level 1 [Member] | Recurring [Member]    
Fair Value Measurements (Textuals) [Line Items]    
Marketable securities $ 11,080 $ 10,318