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v3.20.2

Segment Information - Schedule of Reconciliation of Net Income to EBITDA (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income | $ 42,710 | $ 47,218 | $ 42,402 | $ 41,976 | $ 35,710 | $ 31,555 | $ 132,331 | $ 109,241
Interest income, net | (208) |  |  | (744) |  |  | (801) | (801)
Income tax expense | 14,435 |  |  | 13,790 |  |  | 43,938 | 33,520
Depreciation and Amortization |  |  |  |  |  |  | 12,450 | 10,477
Operating Segments [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income | 42,710 |  |  | 41,976 |  |  | 132,331 | 109,241
Interest income, net | (208) |  |  | (744) |  |  | (801) | (801)
Income tax expense | 14,435 |  |  | 13,790 |  |  | 43,938 | 33,520
Depreciation and Amortization | 4,535 |  |  | 3,587 |  |  | 12,450 | 10,380
EBITDA | 61,472 |  |  | 58,609 |  |  | 187,918 | 152,340
Operating Segments [Member] | Residential [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income | 42,225 |  |  | 41,381 |  |  | 129,157 | 107,859
Interest income, net | (208) |  |  | (744) |  |  | (801) | (794)
Income tax expense | 14,276 |  |  | 13,580 |  |  | 42,853 | 33,046
Depreciation and Amortization | 4,326 |  |  | 3,422 |  |  | 11,855 | 9,947
EBITDA | 60,619 |  |  | 57,639 |  |  | 183,064 | 150,058
Operating Segments [Member] | Commercial [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net income | 485 |  |  | 595 |  |  | 3,174 | 1,382
Interest income, net |  |  |  |  |  |  |  | (7)
Income tax expense | 159 |  |  | 210 |  |  | 1,085 | 474
Depreciation and Amortization | 209 |  |  | 165 |  |  | 595 | 433
EBITDA | $ 853 |  |  | $ 970 |  |  | $ 4,854 | $ 2,282

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