Subsequent Events - Narrative (Details) - Subsequent Event	May 01, 2017 location
Wallboard, Inc. \| Minneapolis-St. Paul Metropolitan Area
Subsequent Event [Line Items]
Number of branch locations	2
Gypsum Wallboard Supply, Inc. \| Tacoma, Washington
Subsequent Event [Line Items]
Number of branch locations	1

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.

No definition available.

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Period Type:	duration