Acquisitions and Purchase Accounting - Additional Information (Details) (USD $)	12 Months Ended			0 Months Ended	12 Months Ended			0 Months Ended	12 Months Ended		12 Months Ended			0 Months Ended	3 Months Ended				12 Months Ended		12 Months Ended		12 Months Ended			0 Months Ended		12 Months Ended		12 Months Ended			0 Months Ended	12 Months Ended		12 Months Ended			0 Months Ended	3 Months Ended			12 Months Ended		12 Months Ended			0 Months Ended	12 Months Ended		12 Months Ended		12 Months Ended			0 Months Ended	12 Months Ended		0 Months Ended	12 Months Ended		12 Months Ended			0 Months Ended	12 Months Ended		12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011	Apr. 12, 2011 Beech Ovens [Member]	Dec. 29, 2012 Beech Ovens [Member] Commercial Foodservice [Member] Backlog [Member]	Apr. 12, 2011 Beech Ovens [Member] Commercial Foodservice [Member] Backlog [Member]	Apr. 12, 2011 Beech Ovens [Member] Trade Names [Member] Commercial Foodservice [Member]	May 27, 2011 Lincat [Member]	Dec. 29, 2012 Lincat [Member] Commercial Foodservice [Member] Customer Relationships [Member]	May 27, 2011 Lincat [Member] Commercial Foodservice [Member] Customer Relationships [Member]	Dec. 29, 2012 Lincat [Member] Commercial Foodservice [Member] Backlog [Member]	May 27, 2011 Lincat [Member] Commercial Foodservice [Member] Backlog [Member]	May 27, 2011 Lincat [Member] Trade Names [Member] Commercial Foodservice [Member]	Jul. 05, 2011 Danfotech [Member]	Mar. 31, 2012 Danfotech [Member]	Dec. 31, 2011 Danfotech [Member]	Jul. 05, 2011 Danfotech [Member] Book and Tax Basis Difference [Member] Tangible Assets [Member] Maximum [Member]	Jul. 05, 2011 Danfotech [Member] Book and Tax Basis Difference [Member] Intangible Assets [Member]	Dec. 29, 2012 Danfotech [Member] Food Processing Group [Member] Customer Relationships [Member]	Jul. 05, 2011 Danfotech [Member] Food Processing Group [Member] Customer Relationships [Member]	Dec. 29, 2012 Danfotech [Member] Food Processing Group [Member] Backlog [Member]	Jul. 05, 2011 Danfotech [Member] Food Processing Group [Member] Backlog [Member] Maximum [Member]	Dec. 29, 2012 Danfotech [Member] Food Processing Group [Member] Developed Technology Rights [Member]	Jul. 05, 2011 Danfotech [Member] Food Processing Group [Member] Developed Technology Rights [Member]	Jul. 05, 2011 Danfotech [Member] Trade Names [Member] Food Processing Group [Member]	Jul. 24, 2011 Maurer [Member]	Jul. 22, 2011 Maurer [Member]	Dec. 29, 2012 Maurer [Member] Food Processing Group [Member] Customer Relationships [Member]	Jul. 22, 2011 Maurer [Member] Food Processing Group [Member] Customer Relationships [Member]	Dec. 29, 2012 Maurer [Member] Food Processing Group [Member] Developed Technology Rights [Member]	Jul. 22, 2011 Maurer [Member] Food Processing Group [Member] Developed Technology Rights [Member] Maximum [Member]	Jul. 22, 2011 Maurer [Member] Trade Names [Member] Food Processing Group [Member]	Aug. 01, 2011 Auto-Bake [Member]	Dec. 29, 2012 Auto-Bake [Member] Food Processing Group [Member] Customer Relationships [Member]	Aug. 01, 2011 Auto-Bake [Member] Food Processing Group [Member] Customer Relationships [Member]	Dec. 29, 2012 Auto-Bake [Member] Food Processing Group [Member] Backlog [Member]	Aug. 01, 2011 Auto-Bake [Member] Food Processing Group [Member] Backlog [Member]	Aug. 01, 2011 Auto-Bake [Member] Trade Names [Member] Food Processing Group [Member]	Dec. 02, 2011 Drake [Member]	Jun. 30, 2012 Drake [Member]	Dec. 02, 2011 Drake [Member] Book and Tax Basis Difference [Member] Tangible Assets and Liability Accounts [Member]	Dec. 02, 2011 Drake [Member] Book and Tax Basis Difference [Member] Intangible Assets [Member]	Dec. 29, 2012 Drake [Member] Customer Relationships [Member]	Dec. 02, 2011 Drake [Member] Customer Relationships [Member]	Dec. 29, 2012 Drake [Member] Backlog [Member]	Dec. 02, 2011 Drake [Member] Backlog [Member]	Dec. 02, 2011 Drake [Member] Trade Names [Member]	Dec. 21, 2011 Armor Inox [Member]	Dec. 29, 2012 Armor Inox [Member] Customer Relationships [Member]	Dec. 21, 2011 Armor Inox [Member] Customer Relationships [Member]	Dec. 29, 2012 Armor Inox [Member] Backlog [Member]	Dec. 21, 2011 Armor Inox [Member] Backlog [Member]	Dec. 29, 2012 Armor Inox [Member] Developed Technology Rights [Member]	Dec. 21, 2011 Armor Inox [Member] Developed Technology Rights [Member]	Dec. 21, 2011 Armor Inox [Member] Trade Names [Member]	Mar. 14, 2012 Baker [Member]	Dec. 29, 2012 Baker [Member] Customer Relationships [Member]	Mar. 14, 2012 Baker [Member] Customer Relationships [Member]	Sep. 05, 2012 Stewart [Member]	Dec. 29, 2012 Stewart [Member] Food Processing Group [Member] Customer Relationships [Member]	Sep. 05, 2012 Stewart [Member] Food Processing Group [Member] Customer Relationships [Member]	Dec. 29, 2012 Stewart [Member] Food Processing Group [Member] Backlog [Member]	Sep. 05, 2012 Stewart [Member] Food Processing Group [Member] Backlog [Member]	Sep. 05, 2012 Stewart [Member] Trade Names [Member] Food Processing Group [Member]	Oct. 31, 2012 Nieco [Member]	Dec. 29, 2012 Nieco [Member] Commercial Foodservice [Member] Customer Relationships [Member]	Oct. 31, 2012 Nieco [Member] Commercial Foodservice [Member] Customer Relationships [Member]	Dec. 29, 2012 Nieco [Member] Commercial Foodservice [Member] Backlog [Member]	Oct. 31, 2012 Nieco [Member] Commercial Foodservice [Member] Backlog [Member]	Oct. 31, 2012 Nieco [Member] Trade Names [Member] Commercial Foodservice [Member]	Apr. 12, 2011 Scenario, Adjustment [Member] Beech Ovens [Member]	May 27, 2011 Scenario, Adjustment [Member] Lincat [Member]	Jul. 05, 2011 Scenario, Adjustment [Member] Danfotech [Member]	Jul. 22, 2011 Scenario, Adjustment [Member] Maurer [Member]	Aug. 01, 2011 Scenario, Adjustment [Member] Auto-Bake [Member]	Dec. 02, 2011 Scenario, Adjustment [Member] Drake [Member]	Dec. 21, 2011 Scenario, Adjustment [Member] Armor Inox [Member]	Mar. 14, 2012 Scenario, Adjustment [Member] Baker [Member]	Sep. 05, 2012 Scenario, Adjustment [Member] Stewart [Member]
Business Acquisition [Line Items]
Business acquisition payment (refund)	$ 0	$ 0	$ 4,607,000	$ 13,000,000				$ 82,100,000						$ 6,100,000												$ 3,300,000							$ 22,500,000						$ 21,700,000	$ 400,000								$ 28,700,000								$ 10,300,000			$ 27,800,000						$ 23,900,000
Other intangibles				2,023,000		100,000	1,900,000	33,319,000		17,600,000		500,000	15,200,000	1,086,000						400,000		100,000		100,000	600,000		922,000		300,000		100,000	600,000	4,058,000		1,900,000		200,000	2,000,000	5,810,000					2,500,000		100,000	3,200,000	9,420,000		1,100,000		3,800,000		1,100,000	3,400,000	750,000		800,000	10,160,000		5,300,000		400,000	4,500,000	5,620,000		3,000,000		100,000	2,500,000	(294,000)	1,976,000	(778,000)	0	(2,726,000)	0	(2,735,000)	750,000	3,310,000
Acquisition, other intangibles, amortization period					3 months				5 years		3 months								4 years		3 months		3 years					4 years		3 years				5 years		3 months							5 years		1 month				6 years		2 years		7 years				5 years			5 years		6 months				4 years		3 months
Acquisition, additional assets purchased														730,000		700,000																																																									730,000
Deferred tax liability, net														100,000			100,000	100,000																							100,000	2,300,000
Current deferred tax asset																																							400,000		400,000
Long term deferred tax liability								9,650,000						137,000																			1,218,000						2,363,000									3,072,000																								(4,153,000)	91,000		(817,000)	(32,000)	(903,000)
Contingent consideration														1,500,000																																													4,000,000						3,058,000								0						0
Net assets acquired and liabilities assumed				13,484,000				94,522,000						8,145,000													3,264,000						22,634,000						22,565,000									46,858,000								10,250,000			32,000,000						27,058,000						0	0	369,000	(583,000)	0	403,000	0	0	0
Refund received in relation to working capital adjustment															$ (400,000)