Details of Subsidiaries (Detail)	12 Months Ended
	Dec. 31, 2012 Ally Profit Investments Limited USD ($)	Dec. 31, 2012 Lihua Holdings Limited HKD	Dec. 31, 2012 Danyang Lihua Electron Co., Ltd. USD ($)	Dec. 31, 2012 Jiangsu Lihua Copper Industry Co., Ltd. USD ($)
Organization and Principal Activities [Line Items]
Entity Incorporation, State Country Name	British Virgin Islands	Hong Kong	People's Republic of China ("PRC")	PRC
Entity Incorporation, Date Of Incorporation	Mar. 12, 2008	Apr. 17, 2008	Dec. 30, 1999	Aug. 31, 2007
Paid-up capital	$ 100	100	$ 10,500,000	$ 46,000,000
Effective ownership	100.00%	100.00%	100.00%	100.00%
Principal activities	Holding company of other subsidiaries	Holding company of other subsidiaries	Manufacturing and sales of pure copper wire and bimetallic composite conductor wire such as copper clad aluminum (CCA) wire and enameled CCA wire	Manufacturing and sales of refined copper