Commitments and Contingencies (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012 People	Dec. 31, 2011	Dec. 31, 2010	Sep. 26, 2011
Commitments and Contingencies (Textual) [Abstract]
Expiration of non-cancellable operating leases	through 2022
Rent expense under operating leases	$ 2.7	$ 2.8	$ 2.5
Incentives per square feet	40.00
Incentives for improvements to space	2.2
Amount received to start up new facility				$ 1.0
Minimum number of people to be employed	232
Time period to meet employment commitment	3 years