SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Significant Accounting Policies [Line Items]
Allowances for doubtful accounts	$ 6,900,000	$ 8,000,000
Inventory under the LIFO method	18,600,000	17,500,000
Percentage of LIFO inventory to total inventory	15.00%	16.00%
Depreciation expense	6,900,000	5,900,000	6,300,000
Intangible amortization expense	12,200,000	10,600,000	9,100,000
Exchange gains (losses) on foreign currency transactions	200,000	200,000	(200,000)
Research and development costs	10,400,000	7,700,000	7,100,000
Dilutive securities	536,000	536,000	970,000
Interest paid	7,800,000	7,600,000	10,600,000
Income tax payments	32,300,000	34,300,000	34,600,000
Non-cash share-based compensation	18,133,000	14,682,000	10,721,000
Non-cash share-based compensation, tax benefit	7,100,000	5,800,000	4,200,000
Senior revolving credit facility	290,000,000
Repayment of senior revolving credit facility	187,800,000
ASC 605
Significant Accounting Policies [Line Items]
Asset for revenue recognized but not yet billed recorded in prepaid expenses and other	1,900,000	5,100,000
Stock Options | Maximum
Significant Accounting Policies [Line Items]
Non-cash share-based compensation			100,000
Restricted Stock
Significant Accounting Policies [Line Items]
Non-cash share-based compensation	18,100,000	14,700,000	10,800,000
Restricted share, fair value	34,700,000		16,100,000
Total unrecognized compensation cost	$ 25,400,000
Total unrecognized compensation cost, recognition period	1.5
Grant awards issued	386,000		335,614
Grant awards, fair value per share at date of grant	$ 89.98		$ 47.78