Shareholders' Equity (Deficit): Stock Options Activity (Details) - Stock options - USD ($)	3 Months Ended		12 Months Ended
	Mar. 26, 2022	Mar. 27, 2021	Dec. 25, 2021
Number of Shares
Outstanding at the beginning of the period (in shares)	355,621
Granted (in shares)	1,500
Exercised (in shares)	(9,156)
Outstanding at the end of the period (in shares)	347,965		355,621
Exercisable at the end of the period (in shares)	212,610
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 146.03
Granted (in dollars per share)	212.18
Exercised (in dollars per share)	137.43
Outstanding at the end of the period (in dollars per share)	146.54		$ 146.03
Exercisable at the end of the period (in dollars per share)	$ 113.96
Weighted Average Remaining Contractual Life (years)
Outstanding	6 years 1 month 2 days		6 years 3 months 25 days
Exercisable at the end of the period	4 years 5 months 23 days
Intrinsic Value
Outstanding at the beginning of the period	$ 39,320,600
Outstanding at the end of the period	28,959,900		$ 39,320,600
Exercisable at the end of the period	$ 23,874,000
Weighted average assumptions and results used in estimation of fair value of options granted
Risk free interest rate (as a percent)	1.88%	0.64%
Expected life (years)	6 years	6 years
Expected volatility (as a percent)	26.64%	25.05%
Dividend yield (as a percent)	4.21%	2.77%
Option fair value (in dollars per share)	$ 33.92	$ 30.02