Inventories (Details) (USD $)	3 Months Ended			9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012	Dec. 31, 2012
Inventory, Net [Abstract]
Raw materials	$ 20,252,000			$ 20,252,000			$ 10,420,000
Work-in-process	908,000			908,000			605,000
Finished goods	8,976,000			8,976,000			11,245,000
Inventory, Gross	30,136,000			30,136,000			22,270,000
Less: inventory valuation allowance	(4,378,000)			(4,378,000)			(2,199,000)
Inventories, net	25,758,000			25,758,000			20,071,000
Other Inventory, Net [Abstract]
Inventory deposit (A)	1,226,000	[1]		1,226,000	[1]		11,637,000	[1]
Less: inventory deposit valuation allowance	(763,000)			(763,000)			(2,801,000)
Inventory Deposit, Net	463,000			463,000			8,836,000
Other Inventory, Materials, Supplies and Merchandise under Consignment, Gross	11,900,000			11,900,000			700,000
Inventory, net	214,000		336,000	578,000		772,000
Inventory Deposit, net	66,000		158,000	876,000		521,000
Adverse Purchase Commitments	$ 271,000		$ 40,000	$ 403,000		$ 12,000

[1]