Description of Business and Basis of Presentation (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2014 Segment manufacturing_location	Dec. 31, 2013
Description of Business and Basis of Presentation [Line Items]
Deferred Tax Assets, Valuation Allowance	$ 59,500,000
Deferred Revenue, Additions	2,000,000	4,500,000
Inventory, Finished Goods, Consigned	603,000	2,490,000
Description of Business and Basis of Presentation (Textual) [Abstract]
Manufacturing locations	3
Operating segments	1
Restricted cash	1,000,000	0
Warranty period, minimum, in years	1 year
Warranty period, maximum, in years	4 years
Cost of Inventory Shipped	603,000	2,500,000
Deferred Revenue and Credits	2,729,000	1,043,000
Collateral for Borrowing [Member]
Description of Business and Basis of Presentation (Textual) [Abstract]
Restricted cash	1,000,000
Cash Received [Member]
Description of Business and Basis of Presentation (Textual) [Abstract]
Deferred Revenue and Credits	$ 1,900,000	$ 1,000,000