Consolidated Statements of Changes in Stockholders' Equity - USD ($)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Treasury Stock [Member]
Balance at Nov. 05, 2016	$ 44,666,507	$ 536,491	$ 10,663,348	$ 43,458,271	$ 266,171	$ (10,257,774)
Balance, shares at Nov. 05, 2016		4,003,607
Cash dividend	(600,726)			(600,726)
Purchase of treasury stock	$ (123,237)					(123,237)
Purchase of treasury stock, shares	(7,341)	(7,341)
Stock-based compensation	$ 7,218		4,933			2,285
Stock-based compensation, shares		303
Unrealized investment gain (loss), net of tax effect	146,062				146,062
Exercise of employee stock options	$ 8,490		950			7,540
Exercise of employee stock options, shares	1,000	1,000
Net income	$ 3,309,983			3,309,983
Balance at Nov. 04, 2017	47,414,297	$ 536,491	10,669,231	46,167,528	412,233	(10,371,186)
Balance, shares at Nov. 04, 2017		3,997,569
Cash dividend	(778,614)			(778,614)
Purchase of treasury stock	$ (2,512,605)					(2,512,605)
Purchase of treasury stock, shares	(123,838)	(123,838)
Stock-based compensation	$ 1,617		1,617
Unrealized investment gain (loss), net of tax effect	(21,826)				(21,826)
Net income	4,963,632			4,963,632
Balance at Nov. 03, 2018	$ 49,066,501	$ 536,491	$ 10,670,848	$ 50,352,546	$ 390,407	$ (12,883,791)
Balance, shares at Nov. 03, 2018		3,873,731