Commitment and Contingencies - Unconditional Purchase Obligations (Details) $ in Thousands	Jun. 30, 2020 USD ($)
Recorded Unconditional Purchase Obligation [Line Items]
2020 (excluding the six months ended June 30, 2020)	$ 112
2021	281
2022	0
2023	7,311
2024	5,624
Thereafter	14,622
Total	27,950
Pccw Global Limiited
Recorded Unconditional Purchase Obligation [Line Items]
Total	27,600
Connectivity Agreement
Recorded Unconditional Purchase Obligation [Line Items]
2020 (excluding the six months ended June 30, 2020)	112
2021	281
2022	0
2023	0
2024	0
Thereafter	0
Total	393
Credit Voucher Agreement
Recorded Unconditional Purchase Obligation [Line Items]
2020 (excluding the six months ended June 30, 2020)	0
2021	0
2022	0
2023	7,311
2024	5,624
Thereafter	14,622
Total	$ 27,557

Recorded Unconditional Purchase Obligation, To Be Paid, After Year Four

No definition available.

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Namespace Prefix:	teum_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of the recorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121559207&loc=d3e25383-109308

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of recorded unconditional purchase obligation to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of recorded unconditional purchase obligation to be paid in remainder of current fiscal year.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of recorded unconditional purchase obligation to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of recorded unconditional purchase obligation to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of recorded unconditional purchase obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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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- Details

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- Details

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- Details

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