CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 8,364,300	$ 5,860,600	$ 22,467,700	$ 16,942,100
Other comprehensive income (loss), before tax:
Unrealized holding net gains (losses) arising during period		(700)		15,900
Other comprehensive income (loss), before tax		(700)		15,900
Income tax (expense) benefit related to items of other comprehensive income:
Unrealized holding net gains/losses arising during period		300		(6,000)
Income tax (expense) benefit related to items of other comprehensive income		300		(6,000)
Other comprehensive income (loss), net of tax		(400)		9,900
Comprehensive income	$ 8,364,300	$ 5,860,200	$ 22,467,700	$ 16,952,000