Consolidated Statements of Changes in Shareholders' Equity - USD ($)	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Total
Balance at Mar. 27, 2016	$ 97,600	$ 58,113,800	$ (57,245,200)	$ 111,561,100	$ 112,527,300
Balance (in shares) at Mar. 27, 2016	8,272,124
Increase (Decrease) in Stockholders' Equity
Proceeds from issuance of stock	$ 400	458,200			458,600
Proceeds from issuance of stock (in shares)	37,432
Treasury stock purchases			(192,400)		(192,400)
Treasury stock purchases (in shares)	(12,453)
Non-cash stock compensation expense	$ 400	434,000			434,400
Non-cash stock compensation expense (in shares)	40,566
Cash dividends paid				(6,656,700)	(6,656,700)
Net income				1,445,100	1,445,100
Balance at Mar. 26, 2017	$ 98,400	59,006,000	(57,437,600)	106,349,500	108,016,300
Balance (in shares) at Mar. 26, 2017	8,337,669
Increase (Decrease) in Stockholders' Equity
Proceeds from issuance of stock	$ 400	604,000			604,400
Proceeds from issuance of stock (in shares)	44,458
Treasury stock purchases			(65,400)		(65,400)
Treasury stock purchases (in shares)	(4,443)
Non-cash stock compensation expense	$ 200	1,001,900			1,002,100
Non-cash stock compensation expense (in shares)	18,853
Cash dividends paid				(6,701,200)	(6,701,200)
Net income				5,195,400	5,195,400
Balance at Apr. 01, 2018	$ 99,000	60,611,900	(57,503,000)	104,843,700	$ 108,051,600
Balance (in shares) at Apr. 01, 2018	8,396,537				8,396,537
Increase (Decrease) in Stockholders' Equity
Proceeds from issuance of stock	$ 500	810,800			$ 811,300
Proceeds from issuance of stock (in shares)	52,067
Treasury stock purchases			(111,100)		(111,100)
Treasury stock purchases (in shares)	(6,332)
Non-cash stock compensation expense	$ 300	1,243,700			1,244,000
Non-cash stock compensation expense (in shares)	26,257
Cash dividends paid				(6,754,400)	(6,754,400)
Net income				5,545,800	5,545,800
Balance at Mar. 31, 2019	$ 99,800	$ 62,666,400	$ (57,614,100)	$ 103,635,100	$ 108,787,200
Balance (in shares) at Mar. 31, 2019	8,468,529				8,468,529