Business Segments (Details 4) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Total Assets	$ 244,434	$ 211,576
United States [Member]
Total Assets	188,596	165,482
United Kingdom [Member]
Total Assets	40,163	39,033
Other Regions [Member]
Total Assets	$ 15,675	$ 7,061