Segment Information - Schedule of Reconciliation of Net Income to EBITDA (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Net Income	$ 25,031	$ 73,795	$ 61,366	$ 48,545	$ 43,301	$ 42,710	$ 47,218	$ 42,402	$ 208,737	$ 175,631	$ 144,738
Interest (income) expense, net									(15)	(999)	(1,503)
Income Tax Expense									66,654	59,003	44,964
Depreciation and Amortization									35,946	17,939	14,031
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net Income									208,737	175,631	144,738
Interest (income) expense, net									(15)	(999)	(1,503)
Income Tax Expense									66,654	59,003	44,964
Depreciation and Amortization									35,946	17,940	14,031
EBITDA									311,322	251,575	202,230
Operating Segments [Member] | Residential [Member]
Segment Reporting Information [Line Items]
Net Income									247,059	171,197	142,811
Interest (income) expense, net									(15)	(999)	(1,496)
Income Tax Expense									79,500	57,488	44,292
Depreciation and Amortization									34,941	17,131	13,413
EBITDA									361,485	244,817	199,020
Operating Segments [Member] | Commercial [Member]
Segment Reporting Information [Line Items]
Net Income									(38,322)	4,434	1,927
Interest (income) expense, net											(7)
Income Tax Expense									(12,846)	1,515	672
Depreciation and Amortization									1,005	809	618
EBITDA									$ (50,163)	$ 6,758	$ 3,210