| lucd-20211231.xsd | EX-101.SCH - XBRL SCHEMA FILE |
| lucd-20211231_cal.xml | EX-101.CAL - XBRL CALCULATION FILE |
| lucd-20211231_def.xml | EX-101.DEF - XBRL DEFINITION FILE |
| lucd-20211231_lab.xml | EX-101.LAB - XBRL LABEL FILE |
| lucd-20211231_pre.xml | EX-101.PRE - XBRL PRESENTATION FILE |
| MetaLinks.json | JSON - IDEA: XBRL DOCUMENT |