Other Financial Information (Accumulated Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Changes in Accumulated Other Comprehensive Income (Loss)
Beginning Balance			$ 423
Other comprehensive income (loss), Unrealized gain (loss) on available-for-sale securities, net of taxes	41	8	73	19
Other comprehensive income (loss), Foreign currency transaction and translation adjustments	205	147	88	(22)
Other comprehensive income (loss)	246	155	161	(3)
Ending Balance	584		584
Foreign Currency Translation Adjustments
Changes in Accumulated Other Comprehensive Income (Loss)
Beginning Balance			326
Other comprehensive income (loss), Foreign currency transaction and translation adjustments			88
Ending Balance	414		414
Unrealized Net Gains on Available-for-Sale Securities, net of Deferred Taxes
Changes in Accumulated Other Comprehensive Income (Loss)
Beginning Balance			97
Other comprehensive income (loss), Unrealized gain (loss) on available-for-sale securities, net of taxes			73
Ending Balance	$ 170		$ 170