Schedule II - Valuation and Qualifying Accounts and Reserves (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Allowance for Doubtful Accounts, Current [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning Of Period	$ 13,182,300	$ 12,600,200	$ 8,838,500
Additions/(Recoveries) Charged to Expense	3,160,000	2,083,500	45,900
Valuation Allowances and Reserves, Additions for Adjustments	1,121,000	478,000	4,886,500
Write-Offs During the Period	(3,855,000)	(1,979,400)	(1,170,700)
Balance At End Of Period	13,608,300	13,182,300	12,600,200
Valuation Allowance of Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning Of Period	23,190,000	29,893,000	20,395,200
Additions/(Recoveries) Charged to Expense	2,833,000	(6,703,000)	9,497,800
Write-Offs During the Period	0	0	0
Balance At End Of Period	$ 26,023,000	$ 23,190,000	$ 29,893,000