Business and Operations - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands								1 Months Ended		3 Months Ended		6 Months Ended		8 Months Ended	12 Months Ended
	Jun. 19, 2021	Jun. 18, 2021	Apr. 29, 2021	Feb. 22, 2021	Jun. 08, 2020	May 04, 2020	Dec. 10, 2019	Aug. 18, 2020	May 31, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	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	Mar. 31, 2019	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Net loss										$ (13,863)	$ (14,790)	$ (23,287)	$ (30,624)		$ (222,300)
Goodwill and intangible asset impairment															(156,800)
Accumulated deficit										(562,780)		(562,780)			(539,493)									$ (332,980)	$ (317,146)
Cash and cash equivalents										$ 3,336		$ 3,336			$ 4,447
Preferred stock, shares authorized (in shares)										49,995,966		49,995,966			49,995,966
Preferred stock, par value (in dollars per share)										$ 0.00001		$ 0.00001			$ 0.00001
Principal										$ 17,500		$ 17,500
Proceeds from issuance of redeemable convertible preferred stock												$ 6,044	$ 0
Senior Secured Convertible Note
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Senior notes					$ 17,500
Proceeds from issuance of debt					14,000
Senior notes, minimum holding amount					$ 10,000
Debt instrument, interest rate, effective percentage					18.00%
Pareteum PPP Loan
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Loans payable						$ 600			$ 600
Debt instrument, term						2 years			2 years
Interest rate (as percent)						1.00%			1.00%
IPass PPP Loan
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Loans payable						$ 800			$ 800
Debt instrument, term						2 years			2 years
Interest rate (as percent)						1.00%			1.00%
Subsequent Event | Warrant
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Stock issued during period, shares, new issues				2,750,000
Exercise price of warrants or rights (in dollars per share)				$ 0.40																		$ 0.37
Subsequent Event | Senior Secured Convertible Note
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Senior notes, released holding amount																					$ 1,000		$ 3,000
Senior notes, remaining holding amount																			$ 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 debt				$ 2,000
Debt instrument, interest rate, effective percentage				8.00%
Subsequent Event | High Trail Note
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Senior notes																		$ 13,500
Percentage of balance to repurchase note																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
Principal			$ 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 (in shares)	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	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								42.14						217.67
Stock issued during period, value, new issues								$ 4,200						$ 21,800
Proceeds from issuance of preferred stock								2,800						13,900
Proceeds from issuance of preferred stock, net								2,900						13,100
Legal fees								$ 100						$ 800