Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-22-012351-index-headers.html | 2022-05-13 16:07:14 | |
| 0001437749-22-012351-index.html | 2022-05-13 16:07:14 | |
| 0001437749-22-012351.txt | 2022-05-13 16:07:14 | |
 0001437749-22-012351-xbrl.zip | 158719 | 2022-05-13 16:07:14 |
| ex_341833.htm | 17133 | 2022-05-13 16:07:14 |
| ex_341834.htm | 17149 | 2022-05-13 16:07:14 |
| ex_341835.htm | 5088 | 2022-05-13 16:07:14 |
| ex_341836.htm | 5722 | 2022-05-13 16:07:14 |
| FilingSummary.xml | 35961 | 2022-05-13 16:07:14 |
| Financial_Report.xlsx | 72206 | 2022-05-13 16:07:14 |
| hrth-20220331.xsd | 50279 | 2022-05-13 16:07:14 |
| hrth-20220331_cal.xml | 57137 | 2022-05-13 16:07:14 |
| hrth-20220331_def.xml | 357105 | 2022-05-13 16:07:14 |
| hrth-20220331_lab.xml | 303524 | 2022-05-13 16:07:14 |
| hrth-20220331_pre.xml | 388905 | 2022-05-13 16:07:14 |
| hrth20220331_10q.htm | 1024893 | 2022-05-13 16:07:14 |
| hrth20220331_10q_htm.xml | 942145 | 2022-05-13 16:07:14 |
 img002.jpg | 10772 | 2022-05-13 16:07:14 |
| MetaLinks.json | 624252 | 2022-05-13 16:07:14 |
| R1.htm | 52573 | 2022-05-13 16:07:14 |
| R10.htm | 74914 | 2022-05-13 16:07:14 |
| R11.htm | 11401 | 2022-05-13 16:07:14 |
| R12.htm | 19805 | 2022-05-13 16:07:14 |
| R13.htm | 7654 | 2022-05-13 16:07:14 |
| R14.htm | 20516 | 2022-05-13 16:07:14 |
| R15.htm | 13072 | 2022-05-13 16:07:14 |
| R16.htm | 31350 | 2022-05-13 16:07:14 |
| R17.htm | 34321 | 2022-05-13 16:07:14 |
| R18.htm | 8351 | 2022-05-13 16:07:14 |
| R19.htm | 6633 | 2022-05-13 16:07:14 |
| R2.htm | 117757 | 2022-05-13 16:07:14 |
| R20.htm | 39859 | 2022-05-13 16:07:14 |
| R21.htm | 75995 | 2022-05-13 16:07:14 |
| R22.htm | 42419 | 2022-05-13 16:07:14 |
| R23.htm | 29144 | 2022-05-13 16:07:14 |
| R24.htm | 72217 | 2022-05-13 16:07:14 |
| R25.htm | 10454 | 2022-05-13 16:07:14 |
| R26.htm | 13530 | 2022-05-13 16:07:14 |
| R27.htm | 27604 | 2022-05-13 16:07:14 |
| R28.htm | 32407 | 2022-05-13 16:07:14 |
| R29.htm | 37537 | 2022-05-13 16:07:14 |
| R3.htm | 28800 | 2022-05-13 16:07:14 |
| R30.htm | 65925 | 2022-05-13 16:07:14 |
| R31.htm | 2984 | 2022-05-13 16:07:14 |
| R32.htm | 9108 | 2022-05-13 16:07:14 |
| R33.htm | 19312 | 2022-05-13 16:07:14 |
| R34.htm | 8759 | 2022-05-13 16:07:14 |
| R35.htm | 19232 | 2022-05-13 16:07:14 |
| R36.htm | 32031 | 2022-05-13 16:07:14 |
| R37.htm | 32325 | 2022-05-13 16:07:14 |
| R38.htm | 42778 | 2022-05-13 16:07:14 |
| R39.htm | 29165 | 2022-05-13 16:07:14 |
| R4.htm | 97653 | 2022-05-13 16:07:14 |
| R40.htm | 61017 | 2022-05-13 16:07:14 |
| R41.htm | 6944 | 2022-05-13 16:07:14 |
| R42.htm | 3017 | 2022-05-13 16:07:14 |
| R43.htm | 14333 | 2022-05-13 16:07:14 |
| R44.htm | 14435 | 2022-05-13 16:07:14 |
| R45.htm | 20199 | 2022-05-13 16:07:14 |
| R46.htm | 12182 | 2022-05-13 16:07:14 |
| R47.htm | 48989 | 2022-05-13 16:07:14 |
| R48.htm | 22873 | 2022-05-13 16:07:14 |
| R49.htm | 3183 | 2022-05-13 16:07:14 |
| R5.htm | 31722 | 2022-05-13 16:07:14 |
| R50.htm | 16914 | 2022-05-13 16:07:14 |
| R51.htm | 12453 | 2022-05-13 16:07:14 |
| R52.htm | 17546 | 2022-05-13 16:07:14 |
| R53.htm | 6487 | 2022-05-13 16:07:14 |
| R54.htm | 48094 | 2022-05-13 16:07:14 |
| R6.htm | 73235 | 2022-05-13 16:07:14 |
| R7.htm | 28483 | 2022-05-13 16:07:14 |
| R8.htm | 16776 | 2022-05-13 16:07:14 |
| R9.htm | 52802 | 2022-05-13 16:07:14 |
| report.css | 2767 | 2022-05-13 16:07:14 |
| Show.js | 1085 | 2022-05-13 16:07:14 |