Stock-Based Compensation Stock Option Awards (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
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 year
Compensation expense	$ 2,874	$ 3,194	$ 3,222
Stock Options [Member]
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)	661,000	688,000	701,000
Granted (in shares)			0
Forfeited (in shares)	(9,000)	(18,000)	(3,000)
Expired (in shares)	(182,000)	(9,000)	(10,000)
Outstanding at (in shares)	470,000	661,000	688,000
Vested and expected to vest at March 31, 2016 (in shares)	469,000
Exercisable at March 31, 2016 (in shares)	433,000
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)	$ 60.37	$ 60.45	$ 60.49
Granted, Weighted Average Exercise Price (usd per share)			0.00
Forfeited, Weighted Average Exercise Price (usd per share)	66.21	61.49	57.12
Expired, Weighted Average Exercise Price (usd per share)	59.23	64.50	64.41
Weighted Average Exercise Price, Outstanding at (usd per share)	60.70	$ 60.37	$ 60.45
Vested and expected to vest at March 31, 2016, Weighted Average Exercise Price (usd per share)	60.70
Exercisable at March 31 2016, Weighted Average Exercise Price (usd per share)	$ 60.76
Weighted Average Remaining Contractual Term, Outstanding at (in years)	5 years 2 months 5 days
Vested and expected to vest at March 31, 2016, Weighted Average Remaining Contractual Term (in years)	5 years 2 months 5 days
Exercisable at March 31, 2016, Weighted Average Remaining Contractual Term (in years)	5 years 1 month 10 days
Outstanding at, Intrinsic Value	$ 0
Vested and expected to vest at March 31, 2016, Outstanding, Aggregate Intrinsic Value	0
Exercisable at March 31, 2016, Intrinsic Value	0
Compensation expense	$ 1,097	$ 1,363	$ 1,366
Number of shares exercised (in shares)	0	0	0