Amount of increase in additional paid in capital (APIC) resulting from a tax benefit associated with share-based compensation plan other than an employee stock ownership plan (ESOP). Includes, but is not limited to, excess tax benefit.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Gross number of share options (or share units) granted during the period.

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Stock-Based Compensation - Plan (Details) - USD ($)		1 Months Ended		12 Months Ended
Stock-Based Compensation - Plan (Details) - USD ($)	May 15, 2020	May 31, 2020	May 15, 2020	Mar. 29, 2020	Mar. 31, 2019	Apr. 01, 2018
Stock-based compensation
Income tax benefit from share-based compensation (in dollars)				$ 308,900	$ 297,300	$ 305,400
Number of shares available for grant (in shares)				685,927
Options Granted (in shares)				405,000	66,500
Performance Stock Units
Stock-based compensation
Cancelled (in shares)				52,532	25,437	181,500
Granted (in shares)				51,616	71,000	86,000
Selling, general and administrative expenses
Stock-based compensation
Stock-based compensation (in dollars)				$ 1,174,600	$ 1,244,000	$ 1,002,100
Subsequent Event
Stock-based compensation
Number of shares available for grant (in shares)	407,222		407,222
Options Granted (in shares)			225,000
Subsequent Event \| Performance Stock Units
Stock-based compensation
Cancelled (in shares)	33,116	33,116
Subsequent Event \| Restricted stock and RSUs
Stock-based compensation
Granted (in shares)	86,821
Subsequent Event \| RSUs
Stock-based compensation
Granted (in shares)	21,000
Subsequent Event \| Restricted stock awards
Stock-based compensation
Granted (in shares)	65,821