Stock-Based Compensation (Narrative) (Details) $ / shares in Units, $ in Thousands		12 Months Ended
	Feb. 26, 2016 $ / shares	Dec. 30, 2017 USD ($) Individual employee $ / shares shares	Dec. 31, 2016 USD ($) $ / shares shares	Jan. 02, 2016 USD ($) $ / shares shares	Jan. 03, 2015 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incentive compensation expense | $		$ 13,900	$ 24,500	$ 5,600
Performance-based incentive expense | $		$ 300	$ 3,800	$ 1,100
Additional securities issued during the period		4,000,000
Key employees participating in plan | Individual		150
Option outstanding (in shares)		4,071,638	3,716,909	2,317,793	2,486,282
Aggregate intrinsic value of options outstanding | $		$ 86,500	$ 59,500	$ 33,900	$ 31,400
Weighted average fair value per share of options granted (in dollars per share) | $ / shares		$ 6.19	$ 4.47	$ 5.03
Options granted (in shares)		2,324,307	1,143,753	384,453
Proceeds from stock options exercised | $		$ 28,400	$ 10,100	$ 7,900
Stock options exercised, tax benefit | $		6,900	910	2,326
Intrinsic value of stock options exercised | $		$ 26,000	9,500	9,000
Stock options vested during period (in shares)		520,517
Weighted average exercise price of options vested during period (in dollars per share) | $ / shares		$ 30.46
Weighted average grant date fair value of options vested during period (in dollars per share) | $ / shares		$ 39.69
Performance-based incentive vesting period		3 years
Performance-based incentive accrual | $		$ 3,800	6,100
ESPP, contribution amount		10.00%
Compensation expense from ESPP | $		$ 200	$ 200	$ 200
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value per share of options granted (in dollars per share) | $ / shares		$ 2.88
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value per share of options granted (in dollars per share) | $ / shares		$ 65.71
Equity Securities
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant		1,800,000
President and CEO
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incentive compensation expense | $		$ 3,400
Performance-Based Restricted Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense | $		$ 2,300
Non-option awards outstanding (in shares)		105,633	75,507	0
Award vesting period		2 years 9 months	2 years 9 months
Awards granted (in shares)		73,133	81,999
Unrecognized compensation expense, period for recognition		1 year 7 months 6 days
Grant date fair value of performance-based restricted units (in dollars per share) | $ / shares		$ 38.41	$ 19.41
Performance-Based Restricted Units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award units, percentage to be awarded based on achievement of targets		0.00%
Performance-Based Restricted Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award units, percentage to be awarded based on achievement of targets		20000.00%
Restricted units | Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share issued in period (in shares)		28,000	28,000
Grant date fair value of performance-based restricted units (in dollars per share) | $ / shares		$ 35.81	$ 30.99
Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional securities issued during the period		700,000
Shares available for grant		700,000
Unrecognized compensation expense | $		$ 11,400	$ 2,900	$ 2,500
Non-option awards outstanding (in shares)		342,724	179,844	166,359	181,767
Awards granted (in shares)		349,684	102,477	74,874
Unrecognized compensation expense, period for recognition		3 years 6 months
Shares purchased to cover withholding taxes (in shares)		46,516	22,959	27,235
Grant date fair value of performance-based restricted units (in dollars per share) | $ / shares		$ 36.59	$ 30.60	$ 31.02
Restricted Shares | Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Capital shares reserved for future issuance (in shares)		400,000,000
Capital shares available for future issuance (in shares)		234,000
Share issued in period (in shares)		12,000	16,000	20,000
Grant date fair value of performance-based restricted units (in dollars per share) | $ / shares		$ 35.81	$ 30.99	$ 29.66
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense | $		$ 13,800	$ 4,300	$ 2,100
Unrecognized compensation expense, period for recognition		3 years 2 months 12 days
Employee Stock Option | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Employee Stock Option | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		5 years
Diamond Foods, Inc.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share based compensation, stock based | $			15,400
Allocated share based compensation, cash based | $			$ 1,000
Option outstanding (in shares)		472,500
Aggregate intrinsic value of options outstanding | $		$ 16,900
Diamond Foods, Inc. | Restricted units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense | $		$ 1,600
Non-option awards outstanding (in shares)		54,663
Diamond Foods, Inc. | Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares purchased to cover withholding taxes (in shares)			70,381
Diamond Foods, Inc. | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price, minimum (in dollars per share) | $ / shares	$ 11.75	$ 11.75
Exercise price, maximum (in dollars per share) | $ / shares	$ 80.24	$ 65.71
Enterprise Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Key employees affected by plan | employee		150
Enterprise Incentive Plan | Performance-Based Restricted Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)		250,169
Options granted (in shares)		1,630,588