XML 41 R29.htm IDEA: XBRL DOCUMENT

Investments - Value of Marketable Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Debt securities: corporate bonds	$ 497	$ 684
Marketable equity securities	1,257
Total	$ 1,754	$ 1,902

- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References + Details