Segments (Details 1) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Revenue for each segment recognized based on customer location
Long-lived assets	$ 6,916	$ 5,300
Total assets	113,955	97,833
North America
Revenue for each segment recognized based on customer location
Long-lived assets	4,918	3,389
Total assets	102,476	92,139
Europe
Revenue for each segment recognized based on customer location
Long-lived assets	1,998	1,911
Total assets	42,531	36,595
Elimination
Revenue for each segment recognized based on customer location
Long-lived assets	0	0
Total assets	$ (31,052)	$ (30,901)