Significant Stock-Based Plan Activity and Stock-Based Compensation (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Stock-Based Compensation Expense [Abstract]
Total Stock-based compensation expense	$ 280,000	$ 171,000
Unrecognized stock-based compensation expense	2,500,000
Weighted average remaining vesting period	3 years 3 months 18 days
Selling, general and administrative expense [Member]
Stock-Based Compensation Expense [Abstract]
Total Stock-based compensation expense	251,000	154,000
Cost of sales [Member]
Stock-Based Compensation Expense [Abstract]
Total Stock-based compensation expense	$ 29,000	$ 17,000