Restructuring Expenses (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Sep. 30, 2012
Activity in restructuring liability account
Beginning Balance	$ 1,665	$ 100
Provision	257
Usage	(1,741)
Ending Balance	181	100
One-time employee termination benefits [Member]
Activity in restructuring liability account
Beginning Balance	1,101
Provision	144
Usage	(1,152)
Ending Balance	93
Lease/rental terminations [Member]
Activity in restructuring liability account
Beginning Balance	448
Provision	14
Usage	(374)
Ending Balance	88
Relocation, move, other expenses [Member]
Activity in restructuring liability account
Beginning Balance	116
Provision	99
Usage	$ (215)