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Basis of Presentation and Summary of Significant Accounting Policies (Operations) (Details) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2019 USD ($) funeral_homes cemeteries states | Sep. 30, 2018 USD ($) | Sep. 30, 2019 USD ($) funeral_homes cemeteries states segment | Sep. 30, 2018 USD ($) | Dec. 31, 2018 USD ($)
Organization Description and Operations [Line Items] |  |  |  |  |
Depreciation expense | $ 3,500 | $ 3,600 | $ 10,400 | $ 10,300 |
Number of business segments | segment |  |  | 2 |  |
Amortization Of Cemetery Property | $ 1,000 | 1,000 | $ 3,000 | 2,800 |
Accounts Receivable, Gross |  |  |  |  | $ 37,244
Period after which commissions are no longer subject to refund |  |  | 1 year |  |
Preneed Cemetery Contracts, Term |  |  | 5 years |  |
The percentage of trust assets in custody of institution receiving trust management services | 76.00% |  | 76.00% |  |
Accounts receivable, net of allowance for bad debts | $ 17,699 |  | $ 17,699 |  | 18,897
Other receivables | 213 |  | 213 |  | 207
Preneed receivables | 19,467 |  | 19,467 |  | 18,441
Bad debt expense |  |  | 1,188 | 1,511 |
Income Tax Expense (Benefit), Net Of Uncertain Tax Positions | $ 947 | $ 1,187 | $ 5,770 | $ 5,065 |
Income taxes before discrete items | 4.60% | 30.30% | 26.50% | 28.00% |
Period in which two-step goodwill impairment test is performed |  |  | 3 years |  |
Goodwill, Qualitative Impairment Assessment, Period |  |  | 2 years |  |
Goodwill, Impairment Loss |  |  | $ 509 |  | $ 846
Allowance for Doubtful Accounts, Percentage of Accounts Receivable | (2.60%) |  | (2.60%) |  | (2.20%)
Percent of total receivables which are 120 days or more past due (in Percent) | 4.20% |  | 4.20% |  | 4.60%
Amortization of capitalized commissions on preneed contracts | $ 140 | $ 156 | $ 417 | $ 449 |
Accumulated Amortization, Property, Plant, and Equipment | (40,600) |  | (40,600) |  | $ (37,700)
Funeral And Cemetery [Member] |  |  |  |  |
Organization Description and Operations [Line Items] |  |  |  |  |
Bad debt expense | 500 | $ 600 | 1,200 | $ 1,500 |
Funeral |  |  |  |  |
Organization Description and Operations [Line Items] |  |  |  |  |
Accounts Receivable, Gross | 7,900 |  | 7,900 |  | 8,500
Accounts receivable, net of allowance for bad debts | 8,342 |  | 8,342 |  | 9,002
Other receivables | 600 |  | 600 |  | 700
Cemetery |  |  |  |  |
Organization Description and Operations [Line Items] |  |  |  |  |
Accounts Receivable, Gross | 39,521 |  | 39,521 |  |
Accounts receivable, net of allowance for bad debts | 9,144 |  | 9,144 |  | 9,688
Preneed receivables | 19,467 |  | 19,467 |  | 18,441
Allowance for Doubtful Accounts Receivable, Noncurrent | 1,225 |  | 1,225 |  | 1,228
Unearned finance charges associated with receivables | $ 4,500 |  | $ 4,500 |  | 4,600
Funeral homes [Member] |  |  |  |  |
Organization Description and Operations [Line Items] |  |  |  |  |
Number of owned and operated funeral homes (in Funeral Homes) | funeral_homes | 179 |  | 179 |  |
Number of states in which Company operates | states | 29 |  | 29 |  |
Revenue, Percentage | 80.00% |  | 80.00% |  |
Cemeteries [Member] |  |  |  |  |
Organization Description and Operations [Line Items] |  |  |  |  |
Number of states in which Company operates | states | 11 |  | 11 |  |
Number of owned and operated cemeteries (in Cemetaries) | cemeteries | 29 |  | 29 |  |
Revenue, Percentage | 20.00% |  | 20.00% |  |
Perpetual Care Trust Invesments [Member] |  |  |  |  |
Organization Description and Operations [Line Items] |  |  |  |  |
Accounts receivable, net of allowance for bad debts | $ 100 |  | $ 100 |  | $ 1,800
Separate Income Tax Return [Member] |  |  |  |  |
Organization Description and Operations [Line Items] |  |  |  |  |
Number Of States In Which Entity Files Separate State Income Tax Returns | states |  |  | 15 |  |
Combined Or Unitary Income Tax Return [Member] |  |  |  |  |
Organization Description and Operations [Line Items] |  |  |  |  |
Number Of States In Which Entity Files Unitary Tax Returns | states |  |  | 14 |  |
Minimum [Member] |  |  |  |  |
Organization Description and Operations [Line Items] |  |  |  |  |
Service Contract, Term |  |  | 8 years |  |
Lease Term |  |  | 1 year |  |
Maximum [Member] |  |  |  |  |
Organization Description and Operations [Line Items] |  |  |  |  |
Service Contract, Term |  |  | 10 years |  |
Lease Term |  |  | 19 years |  |
Lease Term, Options To Extend |  |  | 26 years |  |
Transferred at Point in Time [Member] |  |  |  |  |
Organization Description and Operations [Line Items] |  |  |  |  |
Revenue, Remaining Performance Obligation, Amount | 388,200 |  | $ 388,200 |  |
Valuation, Income Approach [Member] |  |  |  |  |
Organization Description and Operations [Line Items] |  |  |  |  |
Reporting Unit, Measurement Input |  |  | 0.9 |  |
Valuation, Market Approach [Member] |  |  |  |  |
Organization Description and Operations [Line Items] |  |  |  |  |
Reporting Unit, Measurement Input |  |  | 0.1 |  |
Trade Names [Member] |  |  |  |  |
Organization Description and Operations [Line Items] |  |  |  |  |
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) | $ 200 |  | $ 200 |  |

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