XML 35 R67.htm IDEA: XBRL DOCUMENT v3.20.1

Income Taxes - Schedule of Net Operating Loss Carryovers (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Federal
Income Tax Disclosure [Line Items]
Net operating loss carryovers	$ 42,415	$ 24,411	$ 18,048
State
Income Tax Disclosure [Line Items]
Net operating loss carryovers	$ 11,492	$ 9,580

X

- Definition

Income tax disclosure.

+ References

No definition available.

+ Details

Name:	sonm_IncomeTaxDisclosureLineItems
Namespace Prefix:	sonm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319

+ Details

Name:	us-gaap_OperatingLossCarryforwards
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_IncomeTaxAuthorityAxis=us-gaap_DomesticCountryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeTaxAuthorityAxis=us-gaap_StateAndLocalJurisdictionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: