Capital Stock (Tables)

12 Months Ended

Dec. 28, 2019

Schedule of Weighted Average Valuation Assumptions Used to Calculate Fair Value Granted

The following table summarizes the weighted average valuation assumptions used to calculate the fair value of options granted:

	2019			2018			2017
Expected dividend yield		0	%		0	%		0	%
Expected stock price volatility		28	%		27	%		27	%
Risk-free interest rate		2.3	%		2.6	%		1.5	%
Expected life of options	5.4 years			3.0 years			3.0 years

Summary of Restricted Stock Activity

The following table summarizes our restricted stock activity for the three years ended December 28, 2019:

	Shares			Weighted Average Price
Balance at December 31, 2016		145,363		$	49.22
Granted		70,611		$	78.27
Vested		(56,953	)	$	56.03
Cancelled		(5,294	)	$	51.56
Balance at December 30, 2017		153,727		$	59.94
Granted		89,798		$	73.51
Vested		(45,707	)	$	62.56
Cancelled		(27,081	)	$	75.39
Balance at December 29, 2018		170,737		$	63.94
Granted		92,396		$	81.92
Vested		(41,586	)	$	55.72
Cancelled		(44,056	)	$	58.03
Balance at December 28, 2019		177,491		$	76.70

Summary of Stock Option Activity

The following table summarizes our stock option activity for the three years ended December 28, 2019:

	Shares			Option Price per Share		Weighted Average Price		Weighted Average Remaining Terms (years)		Aggregate Intrinsic Value
Balance at December 31, 2016		101,084		$5.67 – $53.32		$	29.52
Granted		58,024		$69.02 – $82.59		$	78.58
Exercised		(32,751	)	$6.90 – $41.59		$	7.69
Cancelled		(3,810	)	$41.59 – $78.64		$	56.72
Balance at December 30, 2017		122,547		$5.67 – $82.59		$	57.74
Granted		81,995		$68.93 – $82.94		$	73.84
Exercised		(15,113	)	$5.67 – $78.64		$	39.38
Cancelled		(960	)	$	72.55	$	72.55
Balance at December 29, 2018		188,469		$7.74 – $82.94		$	66.14
Granted		44,025		$73.72 – $84.93		$	81.84
Exercised		(38,009	)	$7.74 – $78.76		$	58.96
Cancelled		(12,773	)	$41.59 – $82.94		$	75.52
Balance at December 28, 2019		181,712		$41.59 – $84.93		$	70.78		3.8	$	1,308,808
Options exercisable at December 28, 2019		63,432		$41.59 – $82.94		$	62.39		2.3	$	897,145

Summary of Information Concerning Currently Outstanding and Exercisable Options

The following table summarizes information concerning currently outstanding and exercisable options at December 28, 2019:

		Options Outstanding						Options Exercisable
Range of Exercise Price		Number Outstanding		Weighted Average Remaining Contractual Life (years)		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
	$41.59 - $61.13		38,848		1.3	$	45.94		29,136	$	45.94
	$61.14 - $73.13		52,413		3.9	$	71.89		13,762	$	71.68
	$73.14 - $78.70		24,654		3.4	$	77.60		9,650	$	78.64
	$78.71 - $82.31		35,803		5.2	$	80.65		6,871	$	78.76
	$82.32 - $84.93		29,994		5.6	$	83.66		4,013	$	82.83
Balance at December 28, 2019			181,712		3.8	$	70.78		63,432	$	62.39

Performance Restricted Stock [Member]

Schedule of Weighted Average Valuation Assumptions Used to Calculate Fair Value Granted

The following table summarizes the weighted average valuation assumptions used to calculate the fair value of total shareholder return performance restricted stock granted:

	2019
Share price	$	82.03
Expected dividend yield		0.0	%
Expected stock price volatility		27.7	%
Risk-free interest rate		2.5	%
Expected life	2.8 years