Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 11,441	$ 11,294
Marketable securities	55,196	58,477
Accounts receivable, net of allowance for credit losses of $1,138 and $1,168 as of March 31, 2024 and December 31, 2023, respectively	25,965	25,670
Inventories	19,089	19,046
Prepaid expenses and other current assets	4,224	4,331
Total current assets	115,915	118,818
Property and equipment, net	46,230	47,680
Intangible assets, net	1,105	1,194
Right of use assets	1,621	1,068
Other non-current assets	3,270	3,618
Deferred income tax asset	221	256
Total assets	168,362	172,634
Current liabilities:
Accounts payable	6,945	4,780
Accrued airtime	1,105	5,508
Accrued compensation and employee-related expenses	4,567	4,466
Accrued loss on future firm purchase commitments	3,569	3,569
Accrued other	1,912	2,588
Accrued product warranty costs	726	828
Deferred revenue	2,167	1,774
Current operating lease liability	1,211	786
Liability for uncertain tax positions	693	673
Total current liabilities	22,895	24,972
Long-term operating lease liability	398	289
Deferred income tax liability	2	1
Total liabilities	23,295	25,262
Commitments and contingencies (Notes 2, 10, and 15)
Stockholders’ equity:
Preferred stock, $0.01 par value. Authorized 1,000,000 shares; none issued	0	0
Common stock, $0.01 par value. Authorized 30,000,000 shares; 21,205,364 and 21,066,899 shares issued at March 31, 2024 and December 31, 2023, respectively; and 19,749,255 and 19,610,790 shares outstanding at March 31, 2024 and December 31, 2023, respectively	212	211
Additional paid-in capital	165,768	165,140
Accumulated deficit	(4,867)	(1,704)
Accumulated other comprehensive loss	(3,956)	(4,185)
Total stockholders equity before treasury stock adjustment	157,157	159,462
Less: treasury stock at cost, common stock, 1,456,109 and 1,456,109 shares as of March 31, 2024 and December 31, 2023, respectively.	(12,090)	(12,090)
Total stockholders’ equity	145,067	147,372
Total liabilities and stockholders’ equity	$ 168,362	$ 172,634