SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)	1 Months Ended	3 Months Ended
	Feb. 28, 2013	Mar. 30, 2013	Mar. 31, 2012	Dec. 29, 2012
Condensed Consolidated Financial Statements
Increase in EIP segment sales		$ 6,028,000
Inventories
Inventory valued at the lower of cost, determined on the last-in, first-out (LIFO) method, or market (as a percent)		40.00%		43.00%
Excess of replacement cost of inventories over the LIFO value		44,517,000		45,822,000
Raw materials and purchased parts		212,124,000		199,808,000
Work-in-process		35,917,000		36,114,000
Finished goods and manufactured goods		247,733,000		222,284,000
Subtotal		495,774,000		458,206,000
Less: LIFO reserve		44,517,000		45,822,000
Net inventory		451,257,000		412,384,000
Earnings before income taxes and equity in earnings of nonconsolidated subsidiaries
United States		89,384,000	62,695,000
Foreign		23,525,000	15,971,000
Earnings before income taxes and equity in earnings of nonconsolidated subsidiaries		112,909,000	78,666,000
Accounting policy disclosures
Shares of common stock available for issuance		446,126
Equity Method Investments
Proceeds from sale of assets	29,200,000	29,415,000	45,000
Foreign currency translation adjustments		(5,194,000)
Deferred tax benefits		3,200,000
Stock option plans
Accounting policy disclosures
Compensation expense		1,313,000	1,245,000
Income tax benefits		$ 506,000	$ 479,000
Maximum | Stock option plans
Accounting policy disclosures
Vesting period of options		6 years
Expiration period of grant		10 years
Minimum | Stock option plans
Accounting policy disclosures
Vesting period of options		3 years
Expiration period of grant		6 years