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Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details) shares in Thousands |  |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Sep. 30, 2018 USD ($) business | Aug. 21, 2018 acquisitions | Jul. 10, 2018 acquisitions | Sep. 30, 2018 USD ($) business | Dec. 31, 2018 USD ($) states business | Dec. 31, 2018 USD ($) locations states business | Dec. 31, 2018 USD ($) states business | Dec. 31, 2018 USD ($) funeral_homes states business | Dec. 31, 2018 USD ($) acquisitions states business | Dec. 31, 2018 USD ($) states business shares | Dec. 31, 2018 USD ($) states business | Dec. 31, 2018 USD ($) states business | Dec. 31, 2018 USD ($) states business segment | Dec. 31, 2017 USD ($) locations | Dec. 31, 2017 USD ($) funeral_homes | Dec. 31, 2017 USD ($) acquisitions | Dec. 31, 2017 USD ($) shares | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) locations shares
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for Doubtful Accounts Receivable, Current |  |  |  |  | $ 769,000 | $ 769,000 | $ 769,000 | $ 769,000 | $ 769,000 | $ 769,000 | $ 769,000 | $ 769,000 | $ 769,000 | $ 835,000 | $ 835,000 | $ 835,000 | $ 835,000 | $ 835,000 |
Goodwill, Impaired, Period In Which Two-Step Goodwill Impairment Is Performed |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, Qualitative Impairment Assessment, Period |  |  |  |  | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Retained earnings |  |  |  |  | $ 71,680,000 | 71,680,000 | 71,680,000 | 71,680,000 | 71,680,000 | 71,680,000 | 71,680,000 | 71,680,000 | 71,680,000 | 57,904,000 | 57,904,000 | 57,904,000 | 57,904,000 | 57,904,000 |
Financing Receivable, Gross |  |  |  |  | 37,244,000 | 37,244,000 | 37,244,000 | 37,244,000 | 37,244,000 | 37,244,000 | 37,244,000 | 37,244,000 | 37,244,000 | 40,474,000 | 40,474,000 | 40,474,000 | 40,474,000 | 40,474,000 |
Unearned Finance Charges Included In Receivables |  |  |  |  | $ 4,600,000 | $ 4,600,000 | $ 4,600,000 | $ 4,600,000 | $ 4,600,000 | $ 4,600,000 | $ 4,600,000 | $ 4,600,000 | $ 4,600,000 | $ 5,700,000 | $ 5,700,000 | $ 5,700,000 | $ 5,700,000 | $ 5,700,000 |
Percent of total receivables which are 120 days or more past due (in percent) |  |  |  |  | 4.60% | 4.60% | 4.60% | 4.60% | 4.60% | 4.60% | 4.60% | 4.60% | 4.60% | 4.90% | 4.90% | 4.90% | 4.90% | 4.90% |
Number of operating locations at year end | locations |  |  |  |  |  | 211 |  |  |  |  |  |  |  | 210 |  |  |  |  | 202
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense |  |  |  |  |  |  |  |  |  |  |  | $ 800,000 |  |  |  |  |  | $ 100,000 |
Taxes paid on restricted stock vestings and exercises of non-qualified options |  |  |  |  |  |  |  |  |  |  |  | (651,000) |  |  |  |  |  | (509,000) | $ (578,000)
Debt Issuance Costs, Net |  |  |  |  | $ 955,000 | $ 955,000 | $ 955,000 | $ 955,000 | $ 955,000 | $ 955,000 | $ 955,000 | $ 955,000 | $ 955,000 | $ 967,000 | $ 967,000 | $ 967,000 | $ 967,000 | 967,000 |
Number of states in which the entity operated funeral homes (in States) | states |  |  |  |  | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |  |  |  |  |  |
Number of states in which the entity operated cemeteries (in States) | states |  |  |  |  | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |  |  |  |  |  |
Number of business segments | segment |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |
Amortization Of Cemetery Property |  |  |  |  |  |  |  |  |  |  |  | $ 3,600,000 |  |  |  |  |  | 3,300,000 | 3,900,000
Accounts receivable, net of allowance for bad debts |  |  |  |  | $ 18,897,000 | $ 18,897,000 | $ 18,897,000 | $ 18,897,000 | $ 18,897,000 | $ 18,897,000 | $ 18,897,000 | 18,897,000 | $ 18,897,000 | $ 19,655,000 | $ 19,655,000 | $ 19,655,000 | $ 19,655,000 | 19,655,000 |
Bad debt |  |  |  |  |  |  |  |  |  |  |  | $ 1,841,000 |  |  |  |  |  | 2,198,000 | 2,098,000
The percentage of trust assets in custody of institution receiving trust management services |  |  |  |  | 75.00% | 75.00% | 75.00% | 75.00% | 75.00% | 75.00% | 75.00% | 75.00% | 75.00% |  |  |  |  |  |
Preneed Cemetery Contracts, Term |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Field depreciation expense |  |  |  |  |  |  |  |  |  |  |  | $ 13,800,000 |  |  |  |  |  | 12,600,000 | $ 11,500,000
Impairment of long lived assets |  |  |  |  |  |  |  |  |  |  |  | $ 173,000 |  |  |  |  |  | $ 0 |
Number of funeral homes acquired |  | 1 |  |  |  |  |  | 4 | 4 |  |  |  |  |  | 7 | 7 |  |  |
Incremental common shares attributable to dilutive effect of conversion of debt securities | shares |  |  |  |  |  |  |  |  |  | 337 |  |  |  |  |  |  | 941 |  | 491
Allowance for Doubtful Accounts, Percentage of Accounts Receivable |  |  |  |  | 2.20% | 2.20% | 2.20% | 2.20% | 2.20% | 2.20% | 2.20% | 2.20% | 2.20% | 2.50% | 2.50% | 2.50% | 2.50% | 2.50% |
Other Receivables |  |  |  |  | $ 207,000 | $ 207,000 | $ 207,000 | $ 207,000 | $ 207,000 | $ 207,000 | $ 207,000 | $ 207,000 | $ 207,000 | $ 263,000 | $ 263,000 | $ 263,000 | $ 263,000 | $ 263,000 |
Amortization of capitalized commissions on preneed contracts |  |  |  |  |  |  |  |  |  |  |  | $ 599,000 |  |  |  |  |  | 0 | $ 0
Number Of Business Closed | business | 3 |  |  | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down | $ 125,000 |  |  | $ 125,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill and Intangible Asset Impairment |  |  |  |  |  |  |  |  |  |  |  | $ 800,000 |  |  |  |  |  |  |
Past due notifications starting date (in days) |  |  |  |  | 15 days |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of days past due contractual payments are when they are provided for with a one hundred percent allowance (in Days) |  |  |  |  | 90 days |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for Doubtful Accounts Receivable, Noncurrent |  |  |  |  | $ 2,151,000 | $ 2,151,000 | $ 2,151,000 | $ 2,151,000 | $ 2,151,000 | $ 2,151,000 | $ 2,151,000 | $ 2,151,000 | $ 2,151,000 | $ 2,278,000 | 2,278,000 | 2,278,000 | 2,278,000 | 2,278,000 |
Separate Income Tax Return |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of States in Which Entity Files Separate State Income Tax Returns | states |  |  |  |  |  |  |  |  |  |  | 16 |  |  |  |  |  |  |  |
Combined or unitary income tax return |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of States in Which Entity Files Unitary Tax Returns | states |  |  |  |  |  |  |  |  |  |  | 13 |  |  |  |  |  |  |  |
Funeral |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of operating locations at year end | locations |  |  |  |  |  | 182 |  |  |  |  |  |  |  | 178 |  |  |  |  | 170
Cemetery |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of operating locations at year end | locations |  |  |  |  |  | 29 |  |  |  |  |  |  |  | 32 |  |  |  |  | 32
Funeral Homes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Percentage |  |  |  |  | 80.00% | 80.00% | 80.00% | 80.00% | 80.00% | 80.00% | 80.00% | 80.00% | 80.00% |  |  |  |  |  |
Cemeteries [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Percentage |  |  |  |  | 20.00% | 20.00% | 20.00% | 20.00% | 20.00% | 20.00% | 20.00% | 20.00% | 20.00% |  |  |  |  |  |
Perpetual Care Trust Investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable, net of allowance for bad debts |  |  |  |  | $ 1,800,000 | $ 1,800,000 | $ 1,800,000 | $ 1,800,000 | $ 1,800,000 | $ 1,800,000 | $ 1,800,000 | $ 1,800,000 | $ 1,800,000 | $ 1,300,000 | 1,300,000 | 1,300,000 | 1,300,000 | 1,300,000 |
Fredericksburg, Virginia [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of funeral homes acquired | acquisitions |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
NORTH CAROLINA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of funeral homes acquired | acquisitions |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service Corporation International (SCI) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquired real estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,300,000 |
Colorado And New York [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, plant & equipment |  |  |  |  | 17,543,000 | 17,543,000 | 17,543,000 | 17,543,000 | 17,543,000 | 17,543,000 | 17,543,000 | 17,543,000 | 17,543,000 |  |  |  |  |  |
Houston, Texas And Madera, California [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, plant & equipment |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,195,000 | $ 12,195,000 | 12,195,000 | 12,195,000 | 12,195,000 |
Longmont, Colorado [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of funeral homes acquired | funeral_homes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |
Loveland, Colorado [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of funeral homes acquired | funeral_homes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |
Long Island, New York [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of funeral homes acquired | funeral_homes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 |  |  |  |
Trade Names |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  | $ 145,000
Accounting Standards Update 2014-09 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Retained earnings |  |  |  |  | 71,680,000 | 71,680,000 | 71,680,000 | 71,680,000 | 71,680,000 | 71,680,000 | 71,680,000 | 71,680,000 | 71,680,000 | 60,035,000 | $ 60,035,000 | 60,035,000 | 60,035,000 | 60,035,000 |
Accounts receivable, net of allowance for bad debts |  |  |  |  | 18,897,000 | 18,897,000 | 18,897,000 | 18,897,000 | 18,897,000 | 18,897,000 | 18,897,000 | 18,897,000 | 18,897,000 | 18,256,000 | 18,256,000 | 18,256,000 | 18,256,000 | 18,256,000 |
Amortization of capitalized commissions on preneed contracts |  |  |  |  |  |  |  |  |  |  |  | 723,000 |  |  |  |  |  |  |
Convertible subordinated notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Issuance Costs, Net |  |  |  |  | 54,000 | 54,000 | 54,000 | 54,000 | 54,000 | 54,000 | 54,000 | 54,000 | 54,000 | 1,750,000 | 1,750,000 | 1,750,000 | 1,750,000 | 1,750,000 |
Discontinued Operations, Disposed of by Sale [Member] | KENTUCKY |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration |  |  |  |  |  |  |  |  |  |  |  |  |  | 600,000 | 600,000 | 600,000 | 600,000 | 600,000 |
Discontinued Operations, Disposed of by Sale [Member] | Tennessee |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,350,000
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  |  |  |  | 535,000 |  |  |  |  |  | 281,000 | $ 173,000
Cemetery |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for Doubtful Accounts Receivable, Current |  |  |  |  | 580,000 | 580,000 | 580,000 | 580,000 | 580,000 | 580,000 | 580,000 | 580,000 | 580,000 | 622,000 | 622,000 | 622,000 | 622,000 | 622,000 |
Accounts receivable, net of allowance for bad debts |  |  |  |  | 9,688,000 | 9,688,000 | 9,688,000 | 9,688,000 | 9,688,000 | 9,688,000 | 9,688,000 | 9,688,000 | 9,688,000 | 10,331,000 | 10,331,000 | 10,331,000 | 10,331,000 | 10,331,000 |
Allowance for Doubtful Accounts Receivable, Noncurrent |  |  |  |  | 1,228,000 | 1,228,000 | 1,228,000 | 1,228,000 | 1,228,000 | 1,228,000 | 1,228,000 | 1,228,000 | 1,228,000 | 1,396,000 | 1,396,000 | 1,396,000 | 1,396,000 | 1,396,000 |
Funeral |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for Doubtful Accounts Receivable, Current |  |  |  |  | 189,000 | 189,000 | 189,000 | 189,000 | 189,000 | 189,000 | 189,000 | 189,000 | 189,000 | 213,000 | 213,000 | 213,000 | 213,000 | 213,000 |
Accounts Receivable, Gross |  |  |  |  | 8,500,000 | 8,500,000 | 8,500,000 | 8,500,000 | 8,500,000 | 8,500,000 | 8,500,000 | 8,500,000 | 8,500,000 | 8,500,000 | 8,500,000 | 8,500,000 | 8,500,000 | 8,500,000 |
Accounts receivable, net of allowance for bad debts |  |  |  |  | 9,002,000 | 9,002,000 | 9,002,000 | 9,002,000 | 9,002,000 | 9,002,000 | 9,002,000 | 9,002,000 | 9,002,000 | 9,061,000 | 9,061,000 | 9,061,000 | 9,061,000 | 9,061,000 |
Other Receivables |  |  |  |  | 700,000 | 700,000 | 700,000 | 700,000 | 700,000 | 700,000 | 700,000 | 700,000 | 700,000 | 800,000 | 800,000 | 800,000 | 800,000 | 800,000 |
Allowance for Doubtful Accounts Receivable, Noncurrent |  |  |  |  | $ 882,000 | $ 882,000 | $ 882,000 | $ 882,000 | $ 882,000 | $ 882,000 | $ 882,000 | $ 882,000 | $ 882,000 | 882,000 | 882,000 | 882,000 | 882,000 | 882,000 |
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service Contract, Term |  |  |  |  | 8 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service Contract, Term |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restatement Adjustment [Member] | Accounting Standards Update 2014-09 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Retained earnings |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,131,000 | 2,131,000 | 2,131,000 | 2,131,000 | 2,131,000 |
Accounts receivable, net of allowance for bad debts |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,399,000) | (1,399,000) | (1,399,000) | (1,399,000) | (1,399,000) |
Restatement Adjustment [Member] | Accounting Standards Update 2014-09 [Member] | Funeral |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Retained earnings |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,800,000 | 2,800,000 | 2,800,000 | 2,800,000 | 2,800,000 |
Restatement Adjustment [Member] | Accounting Standards Update 2014-09 [Member] | Cemetery |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable, net of allowance for bad debts |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 19,700,000 | $ 19,700,000 | $ 19,700,000 | $ 19,700,000 | $ 19,700,000 |
Valuation, Income Approach [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reporting Unit, Measurement Input |  |  |  |  |  |  | 0.90 |  |  |  |  |  |  |  |  |  |  |  |
Valuation, Market Approach [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reporting Unit, Measurement Input |  |  |  |  |  |  | 0.10 |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Allowance for Doubtful Accounts, Percentage of Accounts Receivable + References No definition available. + Details
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Namespace Prefix: | csv_
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Balance Type: | na
Period Type: | instant

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- Definition Amortization Of Cemetery Property + References No definition available. + Details
Name: | csv_AmortizationOfCemeteryProperty
Namespace Prefix: | csv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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