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| 0001437749-20-023850.txt | 2020-11-13 16:46:56 | |
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| ex_201047.htm | 12831 | 2020-11-13 16:46:56 |
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| FilingSummary.xml | 37773 | 2020-11-13 16:46:56 |
| Financial_Report.xlsx | 79492 | 2020-11-13 16:46:56 |
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| hrth-20200930_pre.xml | 442688 | 2020-11-13 16:46:56 |
| hrth20200821_10q.htm | 1126375 | 2020-11-13 16:46:56 |
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