Total number of share held by related party.

No definition available.

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Namespace Prefix:	tls_
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Period Type:	instant

- Definition

Amount of transactions with related party during the financial reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864

+ Details

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Balance Type:	debit
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of vesting of award under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

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- Details

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Balance Type:
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- Details

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- Details

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- Details

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Related Party Transactions (Details) - USD ($) $ in Thousands		3 Months Ended
	Feb. 01, 2022	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Emmett J. Wood
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction		$ 512	$ 218
Number of shares held by related party (in shares)		94,547		73,562
Director
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction		$ 25	$ 71
Director \| Restricted Stock
Related Party Transaction [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period (in shares)	26,091
Director \| Restricted Stock \| Share-based Payment Arrangement, Tranche One
Related Party Transaction [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage	25.00%
Director \| Restricted Stock \| Share-based Payment Arrangement, Tranche Two
Related Party Transaction [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage	25.00%
Director \| Restricted Stock \| Share-based Payment Arrangement, Tranche Three
Related Party Transaction [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage	25.00%
Director \| Restricted Stock \| Share-based Payment Arrangement, Tranche Four
Related Party Transaction [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage	25.00%