Stock-Based Compensation (Tables)

6 Months Ended

Jun. 26, 2015

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

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 on a straight-line, single-award basis, restricted stock awards ("RSA"), restricted stock units ("RSUs") and performance stock units ("PSUs") included in the accompanying Consolidated Statements of Income were as follows (U.S. dollars in millions):

	Quarter ended				Six months ended
	June 26, 2015		June 27, 2014		June 26, 2015		June 27, 2014
Stock Options	$	1.0	$	1.3	$	2.2	$	2.8
RSUs/PSUs	1.7		1.0		3.5		2.0
RSAs	—		—		0.7		0.7
Total	$	2.7	$	2.3	$	6.4	$	5.5

Stock Option Grants

There were no stock option grants for the six months ended June 26, 2015. The following table lists the various stock option grants from our 2014 Plan for the six months ended June 27, 2014:

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

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

The following table lists the various restricted stock awards and related compensation expense under prior plans for the six months ended June 26, 2015 and June 27, 2014 (U.S. dollars in millions except share and per share data):

Date of Award	Shares of Restricted Stock Awarded	Price Per Share
January 2, 2015	21,875	$	33.60
January 2, 2014	26,117	28.15

Restricted Stock Units Award Activity

The following table lists the various RSUs and PSUs awarded under the 2014 Plan and prior plans for the six months ended June 26, 2015 and June 27, 2014 (U.S. dollars in millions except share and per share data):

Date of Award	Type of Award	Units Awarded	Price Per Share
February 18, 2015	PSU	175,000	$	33.44
February 18, 2015	RSU	50,000	33.44
February 19, 2014	PSU	165,000	25.52