Commitments And Contingencies (Schedule Of Future Rental Commitments) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012
Rental Commitments [Line Items]
2013	$ 3,283
2014	1,479
2015	997
2016	943
2017	972
Thereafter	163
Total minimum lease payments	7,837
Facilities [Member]
Rental Commitments [Line Items]
2013	3,652
2014	1,470
2015	993
2016	942
2017	972
Thereafter	163
Total minimum lease payments	8,192
Subleases [Member]
Rental Commitments [Line Items]
2013	381
Total minimum lease payments	381
Net Facilities Commitments [Member]
Rental Commitments [Line Items]
2013	3,271
2014	1,470
2015	993
2016	942
2017	972
Thereafter	163
Total minimum lease payments	7,811
Equipment Commitments [Member]
Rental Commitments [Line Items]
2013	12
2014	9
2015	4
2016	1
Total minimum lease payments	$ 26