XML 40 R29.htm IDEA: XBRL DOCUMENT v3.19.1
Cash, Cash Equivalents and Investments (Summary of Contractual Maturities of Cash Equivalents and Available-for-Sale Investments) (Details)
$ in Thousands
Mar. 31, 2019
USD ($)
Cash, Cash Equivalents and Investments [Abstract]  
Due in one year or less $ 53,543
Total investments $ 53,543