Business Segment Information (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Presentation of total net revenues and long-lived assets by geographic area
Revenues	$ 21,164	$ 20,944
Long-lived Assets	18,297	18,546
United States [Member]
Presentation of total net revenues and long-lived assets by geographic area
Revenues	16,040	15,636
Long-lived Assets	17,484	17,868
Canada [Member]
Presentation of total net revenues and long-lived assets by geographic area
Long-lived Assets	740	589
Europe [Member]
Presentation of total net revenues and long-lived assets by geographic area
Revenues	2,846	2,798
Other regions [Member]
Presentation of total net revenues and long-lived assets by geographic area
Revenues	2,278	2,510
Long-lived Assets	$ 73	$ 89