Purchase of Remaining Ownership Interest in Joint Venture - Additional Information (Detail) - Homans Associates II LLC [Member] $ in Thousands	May 31, 2019 USD ($) Location
Business Acquisition [Line Items]
Additional ownership interest acquired in subsidiary	20.00%
Percentage of ownership interest	100.00%
Cash consideration paid to obtain additional ownership \| $	$ 32,400
Number of locations in which the company operates \| Location	25

The cash outflow associated with the purchase of noncontrolling interest during the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

Name:	us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration