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|---|---|---|
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| 0000779544-19-000005-index.html | 2019-05-14 16:05:41 | |
| 0000779544-19-000005.txt | 2019-05-14 16:05:41 | |
 0000779544-19-000005-xbrl.zip | 130238 | 2019-05-14 16:05:41 |
| ark-2019330xex3111.htm | 13259 | 2019-05-14 16:05:41 |
| ark-2019330xex3121.htm | 13198 | 2019-05-14 16:05:41 |
| ark-2019330xex321.htm | 6863 | 2019-05-14 16:05:41 |
| arkr-20190330.xml | 517934 | 2019-05-14 16:05:41 |
| arkr-20190330.xsd | 46184 | 2019-05-14 16:05:41 |
| arkr-20190330x10q.htm | 854212 | 2019-05-14 16:05:41 |
| arkr-20190330_cal.xml | 62439 | 2019-05-14 16:05:41 |
| arkr-20190330_def.xml | 116286 | 2019-05-14 16:05:41 |
| arkr-20190330_lab.xml | 481448 | 2019-05-14 16:05:41 |
| arkr-20190330_pre.xml | 236804 | 2019-05-14 16:05:41 |
| FilingSummary.xml | 23072 | 2019-05-14 16:05:41 |
| Financial_Report.xlsx | 51942 | 2019-05-14 16:05:41 |
| R1.htm | 23919 | 2019-05-14 16:05:41 |
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| R9.htm | 35291 | 2019-05-14 16:05:41 |
| report.css | 2767 | 2019-05-14 16:05:41 |
| Show.js | 1085 | 2019-05-14 16:05:41 |