Note 3A - Discontinued Operations and Held for Sale - Contact Center Company - Net Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Net cash generated from/used in operating activities from discontinued operations	$ (6,425)	$ 1,586
Net cash generated from/used in investing activities from discontinued operations	(3,518)	(1,271)
Net cash generated from/used in financing activities from discontinued operations	(132)	(84)
Discontinued Operations, Held-for-Sale or Disposed of by Sale [Member] \| Contact Center Company (CCC) [Member]
Net cash generated from/used in operating activities from discontinued operations	(5,652)	3,699
Net cash generated from/used in investing activities from discontinued operations	(3,513)	(1,280)
Net cash generated from/used in financing activities from discontinued operations	0	0
Net Cash Inflow	(9,165)	2,419
Discontinued Operations, Held-for-Sale or Disposed of by Sale [Member] \| Contact Center Company (CCC) [Member] \| ARGENTINA
Net cash generated from/used in operating activities from discontinued operations	(773)	(2,113)
Net cash generated from/used in investing activities from discontinued operations	(5)	9
Net cash generated from/used in financing activities from discontinued operations	(132)	(84)
Net Cash Inflow	$ (910)	$ (2,188)

Amount of cash inflow (outflow) of financing activities of discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

Name:	us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash inflow (outflow) of investing activities of discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 24
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-24

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5B
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483499/205-20-50-5B

+ Details

Name:	us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash inflow (outflow) of operating activities of discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

+ References

+ Details

Name:	us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Increase (decrease) in cash associated with the entity's discontinued operations.

+ References

+ Details

Name:	us-gaap_NetCashProvidedByUsedInDiscontinuedOperations
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_DisposalGroupClassificationAxis=us-gaap_DiscontinuedOperationsHeldForSaleOrDisposedOfBySaleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=srtk_ContactCenterCompanyCCCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=country_AR
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: