Stock-Based Compensation (Tables)

12 Months Ended

Dec. 30, 2016

Share-based Compensation [Abstract]

Stock-Based Compensation Expense Included in Selling, General and Administrative Expenses Related to Stock Options and Restricted Stock Awards

Stock-based compensation expense included in selling, general and administrative expenses related to stock options, restricted stock awards ("RSAs"), restricted stock units ("RSUs") and performance stock units ("PSUs") is included in the accompanying Consolidated Statements of Income as follows (U.S. dollars in millions):

	Year ended
Types of Awards	December 30, 2016		January 1, 2016		December 26, 2014
Stock options	$	2.4	$	3.9	$	5.2
RSUs/PSUs	$	21.6	$	12.2	$	6.5
RSAs	$	0.9	$	0.7	$	0.7
Total	$	24.9	$	16.8	$	12.4

Stock Option Grants

The following table lists the stock option grant from our 2014 Plan for the year ended January 1, 2016.

Stock Option Grant	Number of Options Granted	Exercise Price		Fair Value
April 30, 2014 - Chairman and Chief Executive Officer	161,000	$	28.89	$	6.26

Stock Option Activity

The following table summarizes stock option activity for the years ended December 30, 2016, January 1, 2016 and December 26, 2014:

	Number of Shares		Weighted Average Exercise Price		Weighted Average Fair Value
Options outstanding at December 27, 2013	3,972,795		$	25.74	$	8.37
Granted	161,000		28.89		6.26
Exercised	(1,945,939	)	25.14		8.96
Cancelled	(72,250	)	29.44		9.79
Options outstanding at December 26, 2014	2,115,606		26.41		8.65
Exercised	(1,320,103	)	26.76		9.05
Cancelled	(35,000	)	29.63		11.43
Options outstanding at January 1, 2016	760,503		25.65		7.84
Exercised	(471,653	)	25.77		8.04
Cancelled	(6,000	)	15.78		5.53
Options outstanding at December 30, 2016	282,850		$	25.64	$	7.55
Exercisable at December 26, 2014	994,606		$	26.82	$	9.29
Exercisable at January 1, 2016	202,303		$	22.66	$	7.69
Exercisable at December 30, 2016	126,250		$	22.61	$	7.86

Weighted Average Assumptions Used in Black-Scholes Option Pricing Model

The following are the weighted average assumptions used in the Black-Scholes option pricing model for the periods indicated:

	Year ended
	December 26, 2014
Volatility	26.96	%
Risk-free rate	1.69	%
Dividend yield	1.73	%
Expected term of grant	5.0 years

Stock Options - Outstanding and Exercisable

Information about stock options outstanding at December 30, 2016 was as follows:

Exercise Price		Remaining Contractual Life	Outstanding	Outstanding Intrinsic Value		Exercisable	Exercisable Intrinsic Value
$	14.77	2.3 years	27,000	$	1.2	27,000	$	1.2
$	19.83	2.1 years	6,250	0.3		6,250	0.3
$	21.72	2.6 years	13,000	0.5		13,000	0.5
$	22.25	1.6 years	21,000	0.8		21,000	0.8
$	23.76	4.6 years	11,000	0.4		11,000	0.4
$	24.29	5.6 years	26,375	1.0		26,375	1.0
$	26.52	6.1 years	32,200	1.1		—	—
$	28.01	6.6 years	31,925	1.0		9,125	0.3
$	28.09	6.6 years	37,200	1.2		—	—
$	28.89	7.3 years	64,400	2.0		—	—
$	33.97	1.2 years	12,500	0.3		12,500	0.3
			282,850	$	9.8	126,250	$	4.8

Restricted Stock Units Award Activity

The following table lists the RSA for the years ended December 30, 2016 and January 1, 2016 (U.S. dollars in millions except share and per share data):

Date of Award	Shares of Restricted Stock Awarded	Price Per Share
January 4, 2016	22,946	$	38.13
January 2, 2015	21,875	$	33.60

Schedule of RSUs / PSUs Awarded

The following table lists the various RSUs/PSUs awarded under the 2014 Plan and Prior Plans for the years ended December 30, 2016 and January 1, 2016 (U.S. dollars in millions except share and per share data):

Date of Award		Type of Award	Units Awarded	Price Per Share
September 2, 2016	1	RSU	50,000	$	58.94
August 3, 2016		RSU	226,500	59.83
February 24, 2016		PSU	140,000	38.99
February 24, 2016		RSU	50,000	38.99
July 29, 2015		RSU	237,000	40.03
February 18, 2015		PSU	175,000	33.44
February 18, 2015		RSU	50,000	33.44

⁽¹⁾ New grant related to the former President/COO transition

Schedule of RSUs / PSUs Activity

The following table summarizes RSUs/PSUs activity for the years ended December 30, 2016, January 1, 2016, December 26, 2014:

	Number of Shares		Weighted Average Grant Date Fair Value
RSUs/PSUs outstanding at December 27, 2013	325,000		$	25.67
Granted	491,398		28.44
Converted	(140,466	)	27.44
Cancelled	—		—
RSUs/PSUs outstanding at December 26, 2014	675,932		27.29
Granted	471,767		36.44
Converted	(157,933	)	32.38
Cancelled	(1,224	)	29.99
RSUs/PSUs outstanding at January 1, 2016	988,542		30.94
Granted	427,624		49.91
Converted	(472,841	)	37.77
Cancelled	(11,289	)	37.89
RSUs/PSUs outstanding at December 30, 2016	932,036		36.09
Vested at December 26, 2014	131,667		$	25.12
Vested at January 1, 2016	249,797		$	25.53
Vested at December 30, 2016	304,940		$	26.49

Summary of RSUs / PSUs Outstanding

Information about RSUs/PSUs outstanding at December 30, 2016 was as follows:

Grant Date Market Value		Outstanding	Outstanding Intrinsic Value		Vested	Vested Intrinsic Value
$	40.03	103,679	$	2.1	—	$	—
$	59.83	141,113	0.1		—	—
$	38.99	101,133	2.2		—	—
$	38.99	40,413	0.9		—	—
$	33.44	117,154	3.2		33,711	2.0
$	33.44	30,694	0.8		—	—
$	25.52	110,211	3.9		73,475	4.5
$	29.99	89,885	2.8		—	—
$	26.52	105,885	3.6		105,885	6.4
$	24.68	91,869	3.3		91,869	5.6
		932,036	$	22.9	304,940	$	18.5