Investment In Joint Ventures (Schedule Of Joint Venture's Carrying Amount) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012		Jun. 30, 2011
Schedule of Equity Method Investments [Line Items]
Balance as of December 31, 2011			$ 1,290
Less: investment loss	(152)	(88)	(273)	[1]	(161)	[1]
Balance as of June 30, 2012	1,017		1,017
ZAP Hangzhou [Member]
Schedule of Equity Method Investments [Line Items]
Balance as of December 31, 2011			554
Less: investment loss			(136)		(161)
Balance as of June 30, 2012	418		418
Shanghai Zapple [Member]
Schedule of Equity Method Investments [Line Items]
Balance as of December 31, 2011			736
Less: investment loss			(137)		0
Balance as of June 30, 2012	$ 599		$ 599

[1] The Company recorded a loss of $136,000 and $161,000 in ZAP Hangzhou, and a loss of $137,000 and $0 in Shanghai Zapple for the periods ended June 30, 2012 and 2011 respectively. These losses relate to the investment in a non-consolidated joint ventures accounted for under the equity method of accounting.