Summary Of Other Investments (Details) - USD ($) $ in Thousands		Sep. 30, 2015	Dec. 31, 2014
Schedule Of Investments [Abstract]
Short-term investments	[1]	$ 30,444	$ 20,252
Debt security, held-to-maturity	[1]	15,000	15,000
Equity investments		6,603	6,000
Total other investments		$ 52,047	$ 41,252

[1] Included in other investments on the consolidated balance sheets.