Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 82,522	$ 100,076
Accounts receivable	971	1,740
Other current assets	2,031	4,516
Total current assets	85,524	106,332
Network under construction	1,629	494
Property and equipment, net of accumulated depreciation of $4,330 and $2,714 at June 30, 2022 and December 31, 2021, respectively	20,265	21,757
Operating lease right-of-use assets	11,457
Intangible assets	4,098	4,095
Other assets	976	4,145
Total assets	123,949	136,823
Current liabilities:
Accounts payable	437	448
Accrued expenses and other current liabilities	4,254	4,600
Operating lease current liabilities	2,970
Deferred revenue	10	1,632
Total current liabilities	7,671	6,680
Warrants	4,725	28,875
Operating lease noncurrent liabilities	5,897
Other long-term liabilities	1,115	1,311
Total liabilities	19,408	36,866
Stockholders’ equity:
Common stock, authorized 500,000,000 shares; 101,386,973 and 96,546,611 shares issued and 101,386,800 and 96,546,611 shares outstanding at June 30, 2022 and December 31, 2021, respectively	11	11
Additional paid-in capital	761,934	747,928
Accumulated other comprehensive loss	(143)	(121)
Accumulated deficit	(657,260)	(647,861)
Common stock in treasury, at cost; 173 and zero shares at June 30, 2022 and December 31, 2021, respectively	(1)
Total stockholders’ equity	104,541	99,957
Total liabilities and stockholders’ equity	$ 123,949	$ 136,823