xbrlDB DPM DB: add instant period check in skipDTS mode, force timeless date unions to go to SQLite as date-only
xbrlDB DPM DB: add instant period check in skipDTS mode, force timeless
date unions to go to SQLite as date-only

sternshus/Arelle,sternshus/Arelle,sternshus/Arelle,sternshus/Arelle,sternshus/Arelle