Common And Preferred Stock (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Class of Stock Disclosures [Abstract]
Common stock, shares authorized	100,000,000
Common Stock, Shares, Outstanding	24,421,835	24,989,946	24,930,725	25,274,506
Preferred stock, shares authorized	5,000,000
Stock Repurchase Program, Authorized Amount	$ 100
Preferred stock, shares outstanding	0
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 56