Segment Reporting and Geographic Information (Details) - Net sales by geographic region (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 12,462	$ 13,307
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	6,297	6,968
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	5,027	4,836
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 1,138	$ 1,503