Significant Accounting Policies: Earnings Per Share (Details) - shares	12 Months Ended
	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Earnings Per Share
Denominator for basic EPS - weighted average common shares	3,671,980	3,719,485	3,840,638
Dilutive shares associated with option plans	138,500	143,779	259,991
Denominator for diluted EPS - weighted average common shares and dilutive potential common shares	3,810,480	3,863,264	4,100,629
Options excluded from EPS calculation - anti-dilutive (in shares)	20,294	14,822	10,262