Shareholders' Equity (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Amount recognized in Statements of Operations-
Stock-based compensation expense	$ 403,000	$ 533,000
Cost of sales
Amount recognized in Statements of Operations-
Stock-based compensation expense	6,000	22,000
Selling
Amount recognized in Statements of Operations-
Stock-based compensation expense	87,000	176,000
Marketing
Amount recognized in Statements of Operations-
Stock-based compensation expense	12,000	16,000
General and administrative
Amount recognized in Statements of Operations-
Stock-based compensation expense	$ 298,000	$ 319,000