Investment In Joint Ventures (Narrative) (Details) In Millions, unless otherwise specified	Jun. 30, 2012 ZAP Hangzhou [Member]	Dec. 11, 2009 ZAP Hangzhou [Member] ZAP [Member] USD ($)	Jun. 30, 2012 Shanghai Zapple [Member]	Nov. 30, 2011 Shanghai Zapple [Member] CNY	Jun. 30, 2012 Better World [Member] ZAP Hangzhou [Member]	Jun. 30, 2012 Alex Wang [Member] ZAP Hangzhou [Member]	Dec. 31, 2012 ZAP Hangzhou [Member] Shanghai Zapple [Member]	Nov. 30, 2011 ZAP Hangzhou [Member] Shanghai Zapple [Member] CNY	Dec. 11, 2009 ZAP, Alex Wang, And Better World [Member] ZAP Hangzhou [Member] USD ($)
Schedule of Equity Method Investments [Line Items]
Joint venture ownership percentage	37.50%		50.00%		37.50%	25.00%	50.00%
Original registered capital of joint venture				20
Joint venture, capital investment		$ 1.1		5.0				3.0	$ 3.0