Income Tax (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Pre-tax profit (loss)	$ (1,291,441)	$ (385,239)
Zoom Technologies
Statutory tax rate	34.00%
Net operating loss carry forward period, years	20
Net operating loss ("NOL") carry forwards	10,200,000
Deferred tax asset valuation allowance provided	10,200,000
TCB Digital
Statutory tax rate	25.00%
Pre-tax profit (loss)	(1,361,596)	(360,102)
Jiangsu Leimone
Statutory tax rate	25.00%
Pre-tax profit (loss)	(190,738)	(801,131)
Nollec Wireless
Statutory tax rate	25.00%
Pre-tax profit (loss)	(2,455,326)	(1,884,866)
Profit Harvest
Statutory tax rate	16.50%
Pre-tax profit (loss)	8,780,223	12,333,401
CDE
Statutory tax rate	16.50%
Pre-tax profit (loss)	369,569	(133,576)
Portables
Statutory tax rate	34.00%
Pre-tax profit (loss)	$ 901,857