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Goodwill - Schedule of Change in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Mar. 31, 2020
Goodwill [Line Items]
Goodwill	$ 813,658	$ 821,919
Accumulated impairment losses	(44,636)	(44,636)
Goodwill, net	769,022	777,283
Acquisitions	8,261
Northeast
Goodwill [Line Items]
Goodwill	97,102	97,102
Accumulated impairment losses	(494)	(494)
Goodwill, net	96,608	96,608
Southeast
Goodwill [Line Items]
Goodwill	60,691	68,952
Accumulated impairment losses	(615)	(615)
Goodwill, net	60,076	68,337
Acquisitions	8,261
South
Goodwill [Line Items]
Goodwill	343,919	343,919
Accumulated impairment losses	(43,527)	(43,527)
Goodwill, net	300,392	300,392
West
Goodwill [Line Items]
Goodwill	311,946	311,946
Goodwill, net	$ 311,946	$ 311,946

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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- Definition

Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
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- Definition

Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (h)
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