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Revenue Recognition (Schedule Of Disaggregated Revenue) (Details) - Roto-Rooter [Member] - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Subtotal | $ 162,559 | $ 146,626 | $ 319,908 | $ 295,725
Implicit price concessions and credit memos | (1,725) | (1,612) | (3,821) | (3,549)
Net revenue | 160,834 | 145,014 | 316,087 | 292,176
Short-Term Core Service Jobs [Member] |  |  |  |
Subtotal | 115,143 | 105,086 | 226,202 | 209,172
Water Restoration [Member] |  |  |  |
Subtotal | 28,239 | 24,765 | 55,891 | 52,502
Contractor Revenue [Member] |  |  |  |
Subtotal | 14,580 | 12,366 | 28,589 | 24,731
Franchise Fees [Member] |  |  |  |
Subtotal | 1,623 | 1,574 | 3,245 | 3,165
Other [Member] |  |  |  |
Subtotal | $ 2,974 | $ 2,835 | $ 5,981 | $ 6,155

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