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Income Taxes, Unrecognized Tax Benefits (Details) - USD ($)	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Unrecognized tax benefits [Roll Forward]
Balance at beginning of period	$ 1,219,000	$ 1,092,000	$ 1,181,000
Additions based on tax positions related to the current year	91,000	234,000	141,000
Additions for tax positions of prior year	0	0	106,000
Reductions for tax positions of prior year	(227,000)	(107,000)	0
Settlements	0	0	(336,000)
Balance at end of period	1,083,000	1,219,000	1,092,000
Unrecognized tax benefits that would impact effective tax rate	938,000	1,054,000	840,000
Recognized interest and penalties	(23,000)	5,000	$ 51,000
Interest and penalties accrued	$ 124,000	$ 146,000

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Amount of unrecognized tax benefits.

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