Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 93,781	$ 100,076
Accounts receivable	37	1,740
Other current assets	2,907	4,516
Total current assets	96,725	106,332
Network under construction	908	494
Property and equipment, net	20,943	21,757
Operating lease right-of-use assets	12,464
Intangible assets	4,058	4,095
Other assets	1,040	4,145
Total assets	136,138	136,823
Current liabilities:
Accounts payable	1,138	448
Accrued expenses and other current liabilities	4,382	4,600
Operating lease current liabilities	3,121
Deferred revenue	469	1,632
Total current liabilities	9,110	6,680
Warrants	22,488	28,875
Operating lease noncurrent liabilities	6,626
Other long-term liabilities	976	1,311
Total liabilities	39,200	36,866
Stockholders’ equity:
Common stock, authorized 500,000,000 shares; 96,553,946 and 96,546,611 shares issued and 96,553,773 and 96,546,611 shares outstanding at March 31, 2022 and December 31, 2021, respectively	11	11
Additional paid-in capital	755,149	747,928
Accumulated other comprehensive loss	(134)	(121)
Accumulated deficit	(658,087)	(647,861)
Common stock in treasury, at cost; 173 and zero shares at March 31, 2022 and December 31, 2021, respectively	(1)
Total stockholders’ equity	96,938	99,957
Total liabilities and stockholders’ equity	$ 136,138	$ 136,823