Commitments and Contingencies (Details Textual) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012 People	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 26, 2011
Commitments and Contingencies (Textual) [Abstract]
Expiration of non-cancellable operating leases	through 2022
Rent expense under operating leases	$ 800,000	$ 700,000	$ 2,100,000	$ 2,200,000
Incentives per square feet	40.00
Incentive Amount for improvement of space	2,200,000			2,223,000
Lease term	10 years
Amount received to start up new facility					$ 1,000,000
Minimum number of people to be employed	232
Time period to meet employment commitment	3 years