Goodwill and Other Intangible Assets Narrative (Details) - USD ($)	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-lived intangible asset useful life	16 years	16 years
Goodwill, gross	$ 143,765,000	$ 143,765,000
Goodwill accumulated impairment	129,775,000	129,775,000
Impairment of goodwill and indefinite lived intangible assets	0	0	$ 0
Impairment of finite lived intangible assets	$ 0	$ 0	$ 0