Acquisitions & Dispositions - Additional Information (Detail) - USD ($)						1 Months Ended	3 Months Ended								12 Months Ended
	Jul. 31, 2015	Dec. 16, 2014	Oct. 31, 2014	Oct. 01, 2014	May 30, 2014	Sep. 30, 2015	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Net sales							$ 1,254,699,000	$ 1,407,504,000	$ 1,354,523,000	$ 1,352,296,000	$ 1,297,327,000	$ 1,391,545,000	$ 1,341,799,000	$ 1,332,375,000	$ 5,369,022,000	$ 5,363,046,000	$ 5,327,205,000	[1]
Goodwill impairment				$ 9,000,000
Impairment charge																155,603,000
Loss on disposition of business																1,461,000	(800,000)	[1]
Azerty de Mexico [Member]
Business Acquisition [Line Items]
Percentage of stock-sale of subsidiary						100.00%
Combination of cash and Seller's note						$ 8,700,000
Goodwill impairment																3,300,000
Cumulative foreign currency translation adjustment, of the disposal group						10,100,000
Pre-tax impairment loss of the disposal group						10,100,000
Loss on disposition of business						$ 1,500,000
Pre-tax income (loss) from subsidiary																5,200,000	300,000
Azerty de Mexico [Member] | Warehousing, Marketing and Administrative Expenses [Member]
Business Acquisition [Line Items]
Impairment charge																10,100,000
Additional cost incurred during transaction																3,600,000
MBS Dev, Inc [Member]
Business Acquisition [Line Items]
Goodwill impairment		$ 9,000,000
Loss on disposition of business		8,200,000
Gain on disposal		$ 800,000
CPO Commerce, Inc [Member]
Business Acquisition [Line Items]
Business acquisition cash paid					$ 37,800,000
Business acquisition, fair value of contingent consideration					5,500,000
Business acquisition contingent consideration payments, range minimum					0
Business acquisition contingent consideration payments, range maximum					$ 10,000,000
Business acquisition contingent consideration liability, current							9,700,000								9,700,000
Stock acquisition, percentage acquired					100.00%
Net sales															135,800,000	119,700,000
MEDCO [Member]
Business Acquisition [Line Items]
Business acquisition cash paid			$ 150,400,000
Business acquisition, fair value of contingent consideration			4,700,000
Business acquisition contingent consideration payments, range minimum			0
Business acquisition contingent consideration payments, range maximum			$ 10,000,000
Business acquisition contingent consideration liability, current							$ 3,200,000								3,200,000
Stock acquisition, percentage acquired			100.00%
Net sales															271,100,000	$ 270,800,000
Amount reserved as a payable related to acquisition			$ 6,000,000
Reserved amount paid related to acquisition									$ 6,000,000
Business acquisition acquired entity indemnification payment period			18 months
Business acquisition contingent consideration liability paid															1,700,000
Pro forma net sales																	5,500,000,000
Pro forma net income (loss)																	$ 117,900,000
Nestor Sales LLC [Member]
Business Acquisition [Line Items]
Business acquisition cash paid	$ 41,800,000
Stock acquisition, percentage acquired	100.00%
Net sales															$ 64,900,000

[1] Revised in 2015 for the impact of the changes in accounting principle related to inventory accounting.