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v3.21.2

Segment Information - Schedule of Reconciliation of Net Income to EBITDA (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2020 | Mar. 31, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net income | $ 61,366 | $ 48,545 | $ 47,218 | $ 42,402 | $ 109,910 | $ 89,620
Interest expense (income), net | 13 |  | (71) |  | 10 | (593)
Income tax expense | 20,978 |  | 16,249 |  | 36,925 | 29,504
Depreciation and amortization |  |  |  |  | 15,702 | 7,915
Operating Segments [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net income | 61,366 |  | 47,218 |  | 109,910 | 89,620
Interest expense (income), net | 13 |  | (71) |  | 10 | (593)
Income tax expense | 20,978 |  | 16,249 |  | 36,925 | 29,504
Depreciation and amortization | 9,278 |  | 4,063 |  | 15,703 | 7,915
EBITDA | 91,635 |  | 67,459 |  | 162,548 | 126,446
Operating Segments [Member] | Residential [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net income | 61,089 |  | 45,912 |  | 109,833 | 86,932
Interest expense (income), net | 13 |  | (71) |  | 10 | (593)
Income tax expense | 20,886 |  | 15,789 |  | 36,899 | 28,577
Depreciation and amortization | 9,020 |  | 3,865 |  | 15,231 | 7,529
EBITDA | 91,008 |  | 65,495 |  | 161,973 | 122,445
Operating Segments [Member] | Commercial [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net income | 277 |  | 1,306 |  | 77 | 2,688
Income tax expense | 92 |  | 460 |  | 26 | 927
Depreciation and amortization | 258 |  | 198 |  | 472 | 386
EBITDA | $ 627 |  | $ 1,964 |  | $ 575 | $ 4,001

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