SUPPLEMENTAL FINANCIAL INFORMATION - Other Current Assets, Net and Other Non-current Assets, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Other current assets, net:
Inventory	$ 167,511	$ 123,606
Prepaids and deposits	58,865	61,877
Trade accounts receivable - DISH Network	235,421	236,479
Other, net	14,135	21,471
Total other current assets	248,241	210,446
Other non-current assets, net:
Capitalized software, net	117,473	116,841
Contract acquisition costs, net	53,114	64,447	$ 70,492	$ 82,986
Other receivables - DISH Network, noncurrent	77,751	74,923
Other receivables, net	33,340	15,072
Restricted marketable investment securities	8,003	11,056
Deferred tax assets, net	8,955	8,011
Restricted cash	1,335	1,342
Contract fulfillment costs, net	1,780	1,931
Other, net	24,734	23,439
Total other non-current assets, net	326,485	317,062
Related Party
Other current assets, net:
Trade accounts receivable - DISH Network	$ 7,730	$ 3,492