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Acquisitions - Additional Information (Detail) $ in Thousands				9 Months Ended
	Nov. 26, 2019 USD ($) Location shares	Aug. 01, 2019 USD ($) Location shares	Apr. 02, 2019 USD ($) Location shares	Sep. 30, 2019 USD ($)
Business Acquisition [Line Items]
Proceeds from non-controlling interest for Business Acquisition				$ 17,000
N&S Supply of Fishkill, Inc
Business Acquisition [Line Items]
Number of locations in which the company operates \| Location	7
Cash consideration	$ 12,000
Stock issued for acquisition \| shares	22,435
Fair value of equity shares issued	$ 4,032
Number of years goodwill is deductible for tax purposes	15 years
Goodwill Acquired	$ 2,644
Peirce Phelps PPI [Member]
Business Acquisition [Line Items]
Number of locations in which the company operates \| Location		19
Business combination recognized identifiable assets acquired and liabilities assumed net		$ 85,000
Cash consideration		$ 10,000
Stock issued for acquisition \| shares		372,543
Fair value of equity shares issued		$ 58,344		58,638
Proceeds from non-controlling interest for Business Acquisition		17,000
Goodwill and intangibles acquired		28,884
Intangible assets acquired		$ 19,000
Number of years goodwill is deductible for tax purposes		15 years
Goodwill Acquired		$ 9,884
Peirce Phelps PPI [Member] \| Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets acquired		$ 5,500
Amortization period		18 years
Peirce Phelps PPI [Member] \| Trade Names And Distribution Rights [Member]
Business Acquisition [Line Items]
Intangible assets acquired		$ 13,500
Dunphey Associates Supply Co [Member]
Business Acquisition [Line Items]
Number of locations in which the company operates \| Location			7
Cash consideration			$ 16,758
Stock issued for acquisition \| shares			50,952
Fair value of equity shares issued			$ 6,891	$ 7,450
Goodwill and intangibles acquired			8,974
Intangible assets acquired			$ 5,300
Number of years goodwill is deductible for tax purposes			15 years
Dunphey Associates Supply Co [Member] \| Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets acquired			$ 2,800
Amortization period			15 years
Dunphey Associates Supply Co [Member] \| Trade Names And Distribution Rights [Member]
Business Acquisition [Line Items]
Intangible assets acquired			$ 2,500