Subsequent Events - Additional Information (Detail) - Subsequent Event - USD ($) $ in Thousands		1 Months Ended
Apr. 02, 2019	Apr. 22, 2019
Subsequent Event [Line Items]
Equity Method Investment Additional Ownership Percentage		1.80%
Payments to Acquire Equity Method Investments		$ 4,940
Payments to Acquire Interest in Subsidiaries and Affiliates		3,952
Proceeds from Noncontrolling Interests		$ 988
Dunphey & Associates Supply Co [Member]
Subsequent Event [Line Items]
Payments to Acquire Businesses, Gross	$ 16,781
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	50,952
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	$ 7,450
Russell Sigler Inc [Member]
Subsequent Event [Line Items]
Equity Method Investment, Ownership Percentage		38.10%

Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity.

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Number of shares of equity interests issued or issuable to acquire entity.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity).

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Amount of cash inflow from a noncontrolling interest. Includes, but is not limited to, purchase of additional shares or other increase in noncontrolling interest ownership.

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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Equity Method Investment, Additional Ownership Percentage

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