Stock-Based Compensation Stock Option Awards (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted Average Remaining Contractual Term, Outstanding at (in years)	1 month 6 days
Compensation expense	$ 1,712	$ 2,874	$ 3,194
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	5 years
Stock option life (in years)	10 years
Options, grants in period (in shares)	0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at (in shares)	470,000	661,000	688,000
Forfeited (in shares)	(4,000)	(9,000)	(18,000)
Expired (in shares)	(8,000)	(182,000)	(9,000)
Outstanding at (in shares)	458,000	470,000	661,000
Vested and expected to vest at March 31, 2017 (in shares)	458,000
Exercisable at March 31, 2017 (in shares)	441,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted Average Exercise Price, Outstanding at (usd per share)	$ 60.70	$ 60.37	$ 60.45
Forfeited, Weighted Average Exercise Price (usd per share)	66.73	66.21	61.49
Expired, Weighted Average Exercise Price (usd per share)	39.40	59.23	64.50
Weighted Average Exercise Price, Outstanding at (usd per share)	61.00	$ 60.70	$ 60.37
Vested and expected to vest at March 31, 2017, Weighted Average Exercise Price (usd per share)	61.00
Exercisable at March 31 2017, Weighted Average Exercise Price (usd per share)	$ 61.04
Weighted Average Remaining Contractual Term, Outstanding at (in years)	4 years 3 months 15 days
Vested and expected to vest at March 31, 2017, Weighted Average Remaining Contractual Term (in years)	4 years 3 months 15 days
Exercisable at March 31, 2017, Weighted Average Remaining Contractual Term (in years)	4 years 3 months 4 days
Outstanding at March 31, 2017, Aggregate Intrinsic Value	$ 0
Vested and expected to vest at March 31, 2017, Outstanding, Aggregate Intrinsic Value	0
Exercisable at March 31, 2017, Aggregate Intrinsic Value	0
Compensation expense	$ 277	$ 1,097	$ 1,363
Number of shares exercised (in shares)	0	0	0