Cemetery Perpetual Care Trust Investments (Perpetual care trust investment security transactions recorded in interest income and other, net) (Details) - Perpetual Care Trust Invesments [Member] - Interest Income and Other, Net [Member] - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
|
| Schedule of Trading Securities and Other Trading Assets [Line Items] | ||||
| Realized gains | $ 22 | $ 644 | $ 304 | $ 925 |
| Realized losses | (312) | (481) | (526) | (630) |
| Decrease (increase) in care trusts’ corpus | $ 290 | $ (163) | $ 222 | $ (295) |