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| 0001447362-23-000067.txt | 2023-05-03 16:33:05 | |
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| cstl-20230331.htm | 1569058 | 2023-05-03 16:33:05 |
| cstl-20230331.xsd | 35966 | 2023-05-03 16:33:05 |
| cstl-20230331_cal.xml | 51408 | 2023-05-03 16:33:05 |
| cstl-20230331_def.xml | 146115 | 2023-05-03 16:33:05 |
| cstl-20230331_htm.xml | 873191 | 2023-05-03 16:33:05 |
| cstl-20230331_lab.xml | 500335 | 2023-05-03 16:33:05 |
| cstl-20230331_pre.xml | 309025 | 2023-05-03 16:33:05 |
| exhibit104-fourthamendment.htm | 47550 | 2023-05-03 16:33:05 |
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| exhibit312-q12023.htm | 15397 | 2023-05-03 16:33:05 |
| exhibit321-q12023.htm | 7777 | 2023-05-03 16:33:05 |
| FilingSummary.xml | 32392 | 2023-05-03 16:33:05 |
| Financial_Report.xlsx | 75270 | 2023-05-03 16:33:05 |
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