Comprehensive Income (Loss) (Schedule Of Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Comprehensive Income (Loss) [Abstract]
Foreign currency translation adjustment, Before Tax Amount	$ 376	$ (37)
Foreign currency translation adjustment, Net of Tax Amount	376	(37)
Unrealized gains (losses) on available-for-sale securities, Before Tax Amount	(79)	30
Unrealized gains (losses) on available-for-sale securities, Tax Provision/(Benefit)	(18)	10
Unrealized gains (losses) on available-for-sale securities, Net of Tax Amount	(61)	20
Reclassification adjustment for other-than-temporary impairment loss on available-for-sale securities included in net income (loss), Before Tax	42
Reclassification adjustment for other-than-temporary impairment loss on available-for-sale securities included in net income (loss), Tax Provision/(Benefit)	15
Reclassification adjustment for other-than-temporary impairment loss on available-for-sale securities included in net income (loss), Net of Tax Amount	27
Reclassification adjustment for gains on available-for-sale securities included in net income, Before Tax Amount	(8)
Reclassification adjustment for gains on available-for-sale securities included in net income, Tax Provision/(Benefit)	(1)
Reclassification adjustment for gains on available-for-sale securities included in net income, Net of Tax Amount	(7)
Total unrealized gains (losses) on available-for-sale securities	(45)	30
Total net changes related to available-for-sale securities, Tax Provision/(Benefit)	(4)	10
Total net changes related to available-for-sale securities, Net of Tax Amount	(41)	20
Unrealized gains (losses) on foreign exchange forward contracts, Before Tax Amount	591	(468)
Unrealized gains (losses) on foreign exchange forward contracts, Tax Provision/(Benefit)	206	(164)
Unrealized gains (losses) on foreign exchange forward contracts, Net of Tax Amount	385	(304)
Reclassification adjustment for (gains) losses on foreign exchange forward contracts included in net income (loss), Before Tax Amount	74	(29)
Reclassification adjustment for (gains) losses on foreign exchange forward contracts included in net income (loss), Tax Provision/(Benefit)	25	(10)
Reclassification adjustment for (gains) losses on foreign exchange forward contracts included in net income (loss), Net of Tax Amount	49	(19)
Total unrealized gains (losses) on foreign exchange forward contracts	665	(497)
Total unrealized gains (losses) on foreign exchange forward contracts, Tax Provision/(Benefit)	231	(174)
Total unrealized gains (losses) on foreign exchange forward contracts, Net of Tax Amount	434	(323)
Other comprehensive income (loss), Before Tax Amount	996	(504)
Other comprehensive income (loss), Tax Provision/(Benefit)	227	(164)
Other comprehensive income (loss), Net of Tax Amount	$ 769	$ (340)