Subsequent Event (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended
	Jun. 20, 2012
Investment in capital expenditures to construct and outfit facility	$ 31,000
Remainder Of Fiscal 2012 [Member]
Investment in capital expenditures to construct and outfit facility	5,000
Scenario, Plan [Member]
Facility square footage	180,000
Area of open space	14
Minimum [Member]
Estimated relocation costs	7,000
Maximum [Member]
Estimated relocation costs	$ 10,000