v3.25.4

Restricted Cash (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Restricted Cash [Abstract] |  |
Held in escrow | $ 14,196 | $ 16,817

X
- Definition Escrow liabilities current. + References No definition available. + Details
Name: | illr_EscrowLiabilitiesCurrent
Namespace Prefix: | illr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_RestrictedCashAndCashEquivalentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration