Business and Operations (Details) - USD ($) $ / shares in Units, $ in Thousands								1 Months Ended	3 Months Ended		4 Months Ended	8 Months Ended	12 Months Ended
	Jun. 19, 2021	Jun. 18, 2021	Apr. 29, 2021	Feb. 22, 2021	Oct. 31, 2020	Jun. 08, 2020	Dec. 10, 2019	May 31, 2020	Mar. 31, 2020	Mar. 31, 2019	Aug. 18, 2020	Aug. 18, 2020	Dec. 31, 2019	Dec. 31, 2021	May 24, 2021	May 01, 2021	Apr. 08, 2021	Dec. 31, 2020	Dec. 23, 2020	Dec. 01, 2020	Jul. 31, 2020	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Net loss									$ 9,424	$ 15,834			$ 222,300
Goodwill and intangible asset impairment													156,800
Accumulated deficit									548,917				539,493									$ 317,146
Cash and cash equivalents									$ 3,660				$ 4,447
Preferred stock, shares authorized (in shares)									49,995,966				49,995,966
Preferred stock, par value (in dollars per share)									$ 0.00001				$ 0.00001
Proceeds from issuance of redeemable convertible preferred stock									$ 4,194	$ 0
Subsequent Event | Warrant
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Stock issued during period, shares, new issues (in shares)				2,750,000	15,000,000
Exercise price of warrants or rights (in dollars per share)				$ 0.40	$ 0.58															$ 0.37
Subsequent Event | Senior Secured Convertible Note
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Legal fees						$ 500
Senior notes						17,500
Proceeds from issuance of loans						14,000
Senior notes, minimum holding amount						$ 10,000
Senior notes, released amount																			$ 1,000		$ 3,000
Debt instrument, interest rate, effective percentage						18.00%
Senior notes, remaining balance																	$ 6,000
Subsequent Event | Senior Second Lien Secured Convertible Note
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Senior notes				$ 2,400
Proceeds from issuance of loans				$ 2,000
Debt instrument, interest rate, effective percentage				8.00%
Subsequent Event | Pareteum PPP Loan
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Loans payable								$ 600
Loan term								2 years
Interest rate (as percent)								1.00%
Subsequent Event | IPass PPP Loan
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Loans payable								$ 800
Loan term								2 years
Interest rate (as percent)								1.00%
Subsequent Event | High Trail Note
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Senior notes																$ 13,500
Cash payment requirement to repurchase note, percentage														120.00%	125.00%			120.00%
Exit fees paid to lender																$ 1,500
Subsequent Event | Eight Percent Senior Second Lien Secured Convertible Note
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Senior notes	$ 17,300
Maximum borrowing capacity	$ 24,000	$ 6,000	$ 6,000
Number of additional shares authorized (in shares)	11,625,000	5,000,000	5,000,000
Outstanding principal amount			$ 1,800
Warrants issued (in shares)			1,490,000
Proceeds from issuance of redeemable convertible preferred stock	$ 5,000		$ 1,500
Debt conversion, converted instrument, shares issued	91.38
Subsequent Event | Eight Percent Senior Second Lien Secured Convertible Note | Warrant
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Stock issued during period, shares, new issues (in shares)	5,000,000
Exercise price of warrants or rights (in dollars per share)	$ 0.37		$ 0.40
Series C Redeemable Preferred Stock
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Preferred stock, shares authorized (in shares)							255
Preferred stock, dividend rate, percentage							8.00%
Preferred stock, par value (in dollars per share)							$ 100,000
Series C Redeemable Preferred Stock | Subsequent Event
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Preferred stock, dividend rate, percentage												8.00%
Stock issued during period, shares, new issues (in shares)											67.34	217.67
Stock issued during period, value, new issues											$ 6,700	$ 21,800
Proceeds from issuance of preferred stock											4,900	13,900
Proceeds from issuance of preferred stock, net											4,600	13,100
Legal fees											$ 200	$ 800