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Allowance for Doubtful Accounts (Tables) | 12 Months Ended
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Dec. 31, 2018
Receivables [Abstract] |
Allowance for Doubtful Debts | In order to provide for these collection problems and the general risk associated with the granting of credit terms, the Company recorded the following bad debt provisions (in an Allowance for Doubtful Accounts):
| Year Ended December 31, |  |  |  |
| 2018 |  | 2017 |  | 2016
| (in thousands) |  |  |  |
Bad debt provision | $ | 51,387 |  | $ | 6,250 |  | $ | 4,629
Impaired Notes Receivable | December 31, 2018, 2017 and 2016 are as follows:
|  | Impaired Notes Receivable |  |  |  |  |  |  |  |
Year Ended December 31, |  | Balance Beginning of Year |  | Additions |  | Deductions |  | Balance End of Year |  | Average Outstanding Balance
|  | (in thousands) |  |  |  |  |  |  |  |
2018 |  | $ | 6,854 |  | $ | 23,382 |  | $ | 4,532 |  | $ | 25,704 |  | $ | 15,448
2017 |  | $ | 5,685 |  | $ | 1,169 |  | $ | — |  | $ | 6,854 |  | $ | 6,270
2016 |  | $ | 6,471 |  | $ | — |  | $ | 786 |  | $ | 5,685 |  | $ | 6,078
|  | Reserve for Impaired Notes Receivable |  |  |  |  |  |
Year Ended December 31, |  | Balance Beginning of Year |  | Additions |  | Deductions |  | Balance End of Year
|  | (in thousands) |  |  |  |  |  |
2018 |  | $ | 2,884 |  | $ | 12,526 |  | $ | 1,938 |  | $ | 13,472
2017 |  | $ | 2,419 |  | $ | 465 |  | $ | — |  | $ | 2,884
2016 |  | $ | 2,139 |  | $ | 280 |  | $ | — |  | $ | 2,419

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- Definition Schedule Of Bad Debt Expense [Table Text Block] + References No definition available. + Details
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Namespace Prefix: | hcsg_
Data Type: | nonnum:textBlockItemType
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- Definition Tabular disclosure of impaired financing receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration