Cost Reduction Plans (Accrued Expenses and Liabilities) (Details) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Mar. 31, 2015
2014 Cost Reduction Plan
Loss on Contract Termination	$ 1,200
Total	248,011		$ 243,205
Summary of currently incurred charges resulting from implementation of the cost reduction plan within accrued expenses and other liabilities
Cost reduction plan liabilities, period start	1,514
Charges	803
(Payments)	(1,510)
Cost reduction plan liabilities, period end	807
Impairment of long-lived assets and related purchase commitments	2,213	$ 2,736
Decrease in Rent Expense	600
Personnel
Summary of currently incurred charges resulting from implementation of the cost reduction plan within accrued expenses and other liabilities
Cost reduction plan liabilities, period start	1,249
Charges	179
(Payments)	(735)
Cost reduction plan liabilities, period end	693
Leasehold
Summary of currently incurred charges resulting from implementation of the cost reduction plan within accrued expenses and other liabilities
Cost reduction plan liabilities, period start	265
Charges	624
(Payments)	(775)
Cost reduction plan liabilities, period end	114
Leasehold improvements
2014 Cost Reduction Plan
Total	15,575		$ 16,974
Property, Plant and Equipment [Member]
Summary of currently incurred charges resulting from implementation of the cost reduction plan within accrued expenses and other liabilities
Impairment of long-lived assets and related purchase commitments	1,100
Beverly Hills, California [Member] | Leasehold improvements
2014 Cost Reduction Plan
Total	4,800
Boulder, Colorado [Member] | Leasehold improvements
2014 Cost Reduction Plan
Total	$ 4,700