Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001447362-23-000036-index-headers.html | 2023-02-28 16:10:41 | |
| 0001447362-23-000036-index.html | 2023-02-28 16:10:41 | |
| 0001447362-23-000036.txt | 2023-02-28 16:10:41 | |
 0001447362-23-000036-xbrl.zip | 36760 | 2023-02-28 16:10:41 |
| cstl-20230228.htm | 39328 | 2023-02-28 16:10:41 |
| cstl-20230228.xsd | 1929 | 2023-02-28 16:10:41 |
| cstl-20230228_htm.xml | 11615 | 2023-02-28 16:10:41 |
| cstl-20230228_lab.xml | 24849 | 2023-02-28 16:10:41 |
| cstl-20230228_pre.xml | 13064 | 2023-02-28 16:10:41 |
 cstllogo01a.jpg | 18903 | 2023-02-28 16:10:41 |
| exhibit991q42022earningsre.htm | 266391 | 2023-02-28 16:10:41 |
| exhibit992q422.htm | 22413 | 2023-02-28 16:10:41 |
 exhibit992q422001.jpg | 79428 | 2023-02-28 16:10:41 |
 exhibit992q422002.jpg | 157121 | 2023-02-28 16:10:41 |
 exhibit992q422003.jpg | 77786 | 2023-02-28 16:10:41 |
 exhibit992q422004.jpg | 67384 | 2023-02-28 16:10:41 |
 exhibit992q422005.jpg | 87243 | 2023-02-28 16:10:41 |
 exhibit992q422006.jpg | 85672 | 2023-02-28 16:10:41 |
 exhibit992q422007.jpg | 105617 | 2023-02-28 16:10:41 |
 exhibit992q422008.jpg | 118253 | 2023-02-28 16:10:41 |
 exhibit992q422009.jpg | 81629 | 2023-02-28 16:10:41 |
 exhibit992q422010.jpg | 99970 | 2023-02-28 16:10:41 |
 exhibit992q422011.jpg | 135317 | 2023-02-28 16:10:41 |
 exhibit992q422012.jpg | 94513 | 2023-02-28 16:10:41 |
 exhibit992q422013.jpg | 89318 | 2023-02-28 16:10:41 |
 exhibit992q422014.jpg | 68173 | 2023-02-28 16:10:41 |
 exhibit992q422015.jpg | 207544 | 2023-02-28 16:10:41 |
 exhibit992q422016.jpg | 108699 | 2023-02-28 16:10:41 |
 exhibit992q422017.jpg | 131421 | 2023-02-28 16:10:41 |
 exhibit992q422018.jpg | 113007 | 2023-02-28 16:10:41 |
 exhibit992q422019.jpg | 61696 | 2023-02-28 16:10:41 |
 exhibit992q422020.jpg | 98375 | 2023-02-28 16:10:41 |
| FilingSummary.xml | 1698 | 2023-02-28 16:10:41 |
| Financial_Report.xlsx | 5702 | 2023-02-28 16:10:41 |
| MetaLinks.json | 17763 | 2023-02-28 16:10:41 |
| R1.htm | 39619 | 2023-02-28 16:10:41 |
| report.css | 2767 | 2023-02-28 16:10:41 |
| Show.js | 1085 | 2023-02-28 16:10:41 |