CORRECTION OF PRIOR PERIOD ERROR (Income Statement) (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net sales	$ 590,447	$ 479,222	$ 526,386	$ 501,661	$ 550,475	$ 509,120	$ 506,349	$ 450,798	$ 2,097,716	$ 2,016,742	$ 1,854,513
Cost of sales									1,438,973	1,359,795	1,248,248
Gross profit	194,046	141,416	164,007	159,274	181,672	167,332	164,177	143,766	658,743	656,947	606,265
Operating income									161,446	186,854	166,685
Earnings before income taxes									135,362	166,882	145,153
Provision for income taxes									43,073	48,262	47,269
Income (Loss) from Continuing Operations Attributable to Parent	38,169	11,443	22,835	19,842	36,280	31,874	29,042	21,424	92,289	118,620	97,884
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	324	(144)	(95)	21,470	1,884	2,619	1,717	1,549	21,555	7,769	4,296
Net earnings	38,493	11,299	22,740	41,312	38,164	34,493	30,759	22,973	113,844	126,389	102,180
Basic earnings per share
Income (Loss) from Continuing Operations, Per Basic Share	$ 0.82	$ 0.24	$ 0.49	$ 0.42	$ 0.78	$ 0.69	$ 0.63	$ 0.46	$ 1.98	$ 2.56	$ 2.14
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share	$ 0	$ 0	$ 0	$ 0.46	$ 0.04	$ 0.05	$ 0.04	$ 0.03	$ 0.46	$ 0.17	$ 0.09
Earnings Per Share, Basic	$ 0.82	$ 0.24	$ 0.49	$ 0.88	$ 0.82	$ 0.74	$ 0.67	$ 0.49	$ 2.44	$ 2.73	$ 2.23
Diluted earnings per share
Earnings from continuing operations	$ 0.81	$ 0.24	$ 0.48	$ 0.42	$ 0.77	$ 0.68	$ 0.63	$ 0.45	$ 1.95	$ 2.52	$ 2.12
Earnings from discontinued operations	$ 0	$ 0	$ 0	$ 0.45	$ 0.04	$ 0.05	$ 0.04	$ 0.03	$ 0.45	$ 0.17	$ 0.09
Earnings Per Share, Diluted	$ 0.81	$ 0.24	$ 0.48	$ 0.87	$ 0.81	$ 0.73	$ 0.66	$ 0.49	$ 2.40	$ 2.69	$ 2.21
ScenarioPreviouslyReportedMember
Net sales					561,379		514,905	461,850		2,054,130	1,893,134
Cost of sales										1,378,012	1,271,381
Gross profit					187,555		168,957	148,969		676,118	621,753
Operating income										204,956	179,823
Earnings before income taxes										184,989	158,295
Provision for income taxes										54,566	51,697
Income (Loss) from Continuing Operations Attributable to Parent					39,751		31,796	24,516		130,423	106,598
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest					0		0	0		0	0
Net earnings					39,751		31,796	24,516		130,423	106,598
Basic earnings per share
Income (Loss) from Continuing Operations, Per Basic Share					$ 0.85		$ 0.69	$ 0.53		$ 2.81	$ 2.33
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share					$ 0		$ 0	$ 0		$ 0	$ 0
Earnings Per Share, Basic					$ 0.85		$ 0.69	$ 0.53		$ 2.81	$ 2.33
Diluted earnings per share
Earnings from continuing operations					$ 0.84		$ 0.68	$ 0.52		$ 2.77	$ 2.30
Earnings from discontinued operations					$ 0		$ 0	$ 0		$ 0	$ 0
Earnings Per Share, Diluted					$ 0.84		$ 0.68	$ 0.52		$ 2.77	$ 2.30
RestatementAdjustmentMember
Net sales					(1,771)		677	(2,133)		(878)	(7,443)
Cost of sales										4,708	(1,206)
Gross profit					(2,227)		(1,404)	(2,137)		(5,586)	(6,237)
Operating income										(5,586)	(6,237)
Earnings before income taxes										(5,586)	(6,237)
Provision for income taxes										(1,552)	(1,819)
Income (Loss) from Continuing Operations Attributable to Parent					(1,587)		(1,037)	(1,543)		(4,034)	(4,418)
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest					0		0	0		0	0
Net earnings					(1,587)		(1,037)	(1,543)		(4,034)	(4,418)
Basic earnings per share
Income (Loss) from Continuing Operations, Per Basic Share					$ (0.03)		$ (0.02)	$ (0.03)		$ (0.09)	$ (0.10)
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share					$ 0		$ 0	$ 0		$ 0	$ 0
Earnings Per Share, Basic					$ (0.03)		$ (0.02)	$ (0.03)		$ (0.09)	$ (0.10)
Diluted earnings per share
Earnings from continuing operations					$ (0.03)		$ (0.02)	$ (0.03)		$ (0.09)	$ (0.09)
Earnings from discontinued operations					$ 0		$ 0	$ 0		$ 0	$ 0
Earnings Per Share, Diluted					$ (0.03)		$ (0.02)	$ (0.03)		$ (0.09)	$ (0.09)
SegmentDiscontinuedOperationsMember
Net sales					(9,133)		(9,233)	(8,919)		(36,510)	(31,178)
Cost of sales										(22,925)	(21,927)
Gross profit					(3,656)		(3,376)	(3,066)		(13,585)	(9,251)
Operating income										(12,516)	(6,901)
Earnings before income taxes										(12,521)	(6,905)
Provision for income taxes										(4,752)	(2,609)
Income (Loss) from Continuing Operations Attributable to Parent					(1,884)		(1,717)	(1,549)		(7,769)	(4,296)
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest					1,884		1,717	1,549		7,769	4,296
Net earnings					$ 0		$ 0	$ 0		$ 0	$ 0
Basic earnings per share
Income (Loss) from Continuing Operations, Per Basic Share					$ (0.04)		$ (0.04)	$ (0.03)		$ (0.17)	$ (0.09)
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share					$ 0.04		$ 0.04	$ 0.03		$ 0.17	$ 0.09
Earnings Per Share, Basic					$ 0		$ 0	$ 0		$ 0	$ 0
Diluted earnings per share
Earnings from continuing operations					$ (0.04)		$ (0.04)	$ (0.03)		$ (0.17)	$ (0.09)
Earnings from discontinued operations					$ 0.04		$ 0.04	$ 0.03		$ 0.17	$ 0.09
Earnings Per Share, Diluted					$ 0		$ 0	$ 0		$ 0	$ 0