Segment Information - Schedule of Reconciliation of Net Income to EBITDA (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Net income (loss)	$ 71,211	$ 48,545
Interest expense (income), net	(14)	3
Income tax expense (benefit)	23,727	15,947
Depreciation and amortization	10,473	6,423
Residential [Member]
Segment Reporting Information [Line Items]
Net income (loss)		48,745
Interest expense (income), net		(3)
Income tax expense (benefit)		16,012
Depreciation and amortization		6,210
EBITDA		70,964
Commercial [Member]
Segment Reporting Information [Line Items]
Net income (loss)		(200)
Income tax expense (benefit)		(65)
Depreciation and amortization		213
EBITDA		(52)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net income (loss)	71,211	48,545
Interest expense (income), net	14	(3)
Income tax expense (benefit)	23,727	15,947
Depreciation and amortization	10,473	6,423
EBITDA	105,425	70,912
Operating Segments [Member] | Residential [Member]
Segment Reporting Information [Line Items]
Net income (loss)	72,215	48,745
Interest expense (income), net	14
Income tax expense (benefit)	24,063	16,012
Depreciation and amortization	10,191	6,210
EBITDA	106,483	70,964
Operating Segments [Member] | Commercial [Member]
Segment Reporting Information [Line Items]
Net income (loss)	(1,004)	(200)
Income tax expense (benefit)	(336)	(65)
Depreciation and amortization	282	213
EBITDA	$ (1,058)	$ (52)