SEGMENT INFORMATION (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011 segment	Dec. 31, 2010	Dec. 31, 2009
SEGMENT INFORMATION
Number of reportable segments									2
Segment information
Net sales	$ 409,957,000	$ 474,709,000	$ 462,145,000	$ 356,419,000	$ 318,665,000	$ 381,466,000	$ 365,701,000	$ 238,110,000	$ 1,703,230,000	$ 1,303,942,000	$ 1,143,299,000
Contribution margin									547,501,000	435,965,000	395,355,000
Corporate and unallocated expense									(91,078,000)	(88,151,000)	(58,046,000)
Operating income									456,423,000	347,814,000	337,309,000
Interest and other income, net									847,000	1,488,000	(1,614,000)
Income before provision for income taxes									457,270,000	349,302,000	335,695,000
Depreciation and amortization									17,032,000	11,728,000	5,839,000
Intangible amortization									52,000	48,000	68,000
Stock-based compensation expense									19,400,000	16,900,000	14,000,000
Bad debt expense									52,000	1,659,000	671,000
Direct Store Delivery ("DSD")
Segment information
Net sales									1,608,326,000	1,212,645,000	1,045,104,000
Contribution margin									543,210,000	436,742,000	391,712,000
Interest and other income, net									(12,000)	(51,000)	(3,682,000)
Depreciation and amortization									12,684,000	6,933,000	3,944,000
Increase (decrease) in net sales due to reclassification											(6,100,000)
Increase (decrease) in contribution margin due to reclassification											2,400,000
Warehouse ("Warehouse")
Segment information
Net sales									94,904,000	91,297,000	98,195,000
Contribution margin									4,291,000	(777,000)	3,643,000
Interest and other income, net									(1,000)
Depreciation and amortization									87,000	55,000	31,000
Intangible amortization									44,000	42,000	44,000
Increase (decrease) in net sales due to reclassification											6,100,000
Increase (decrease) in contribution margin due to reclassification											(2,400,000)
Corporate and Unallocated
Segment information
Corporate and unallocated expense									(91,078,000)	(88,151,000)	(58,046,000)
Interest and other income, net									860,000	1,539,000	2,068,000
Depreciation and amortization									4,261,000	4,740,000	1,864,000
Intangible amortization									8,000	6,000	24,000
Payroll cost									55,800,000	51,200,000	38,000,000
Stock-based compensation expense									19,400,000	16,900,000	14,000,000
Professional service expenses									17,800,000	20,700,000	7,900,000
Depreciation expenses									4,100,000	4,700,000
Bad debt expense										1,700,000
Other operating expenses									$ 13,400,000	$ 10,000,000	$ 12,100,000