Impairment and Restructuring Charges (Schedule of Accrued Restructuring Charges) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2019
Restructuring Reserve [Roll Forward]
Balance		$ 2,655
Cash payments		(1,577)
Balance	$ 1,078	1,078
Restructuring Reserve [Abstract]
Accrued restructuring charges	1,078	1,078	$ 1,078
Cost-Reduction Actions [Member]
Restructuring Reserve [Roll Forward]
Balance		679
Severance costs	34	206
Facility exit		(28)
Cash payments		(699)
Balance	158	158
Restructuring Reserve [Abstract]
Accrued restructuring charges	$ 158	$ 158	158
Less amount classified as current liabilities - restructuring reserve			101
Noncurrent liabilities - included in other liabilities			$ 57