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Net Loss per Share - Additional information (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) $ / shares
Earnings Per Share [Abstract]
Deemed dividend to the preferred stockholders | $	$ 2,829
Increase in net loss per share from deemed dividend | $ / shares	$ 9.14

X

- Definition

The amount of per share increase in net loss from deemed dividend.

+ References

No definition available.

+ Details

Name:	tlsi_DeemedDividendIncreaseInNetLossPerShare
Namespace Prefix:	tlsi_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of deemed dividend related to Series B-2 preferred stock down round provision.

+ References

No definition available.

+ Details

Name:	tlsi_DeemedDividendRelatedToSeriesBTwoPreferredStockDownRoundProvision
Namespace Prefix:	tlsi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_EarningsPerShareAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration