Fair Value Of Financial Instruments (Narrative) (Details) - Significant Unobservable Inputs (Level 3) [Member] $ in Thousands	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually evaluated for impairment	$ 4,900	$ 2,800
OREO	183	582
Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans individually evaluated for impairment	4,900	2,800
OREO	$ 183	$ 582
Fair Value, Nonrecurring [Member] | Estimated Selling Costs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans receivable, measurement input	0.10
OREO, measurement input	0.10
Fair Value, Nonrecurring [Member] | Lack of Marketability [Member] | Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans receivable, measurement input	0.10
Fair Value, Nonrecurring [Member] | Lack of Marketability [Member] | Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans receivable, measurement input	0.50
Fair Value, Nonrecurring [Member] | Lack of Marketability [Member] | Weighted Average [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans receivable, measurement input	0.20