Commitments and Contingencies (Details) $ in Thousands										1 Months Ended			3 Months Ended						12 Months Ended		183 Months Ended
	Mar. 30, 2024	Jun. 14, 2023	Jun. 14, 2022	Dec. 30, 2020 USD ($)	Jul. 26, 2019 USD ($)	Jun. 08, 2018	Jun. 07, 2018 USD ($)	Jun. 06, 2018	Aug. 18, 2015 USD ($)	Dec. 31, 2027	Jun. 30, 2023	Jun. 30, 2022	Mar. 31, 2023 USD ($) item	Mar. 31, 2023 USD ($) item	Mar. 31, 2023 USD ($) item	Mar. 31, 2023 USD ($) site item	Mar. 31, 2023 USD ($) item	Mar. 31, 2018 USD ($) item	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Mar. 31, 2023 USD ($) item	Jun. 14, 2025	Jul. 31, 2020 USD ($)
Commitment and Contingencies
Network development current and future expenditures															$ 10,000,000				$ 10,000,000	$ 10,000,000
Payment to customer																					$ 30,000,000
Percentage of Population 5G Services offered		50.00%											70.00%	70.00%	70.00%	70.00%	70.00%				70.00%	75.00%
Percentage of Population Northstar Wireless and SNR Wireless offered	75.00%									75.00%
FCC authorizations													$ 37,231,920	$ 37,231,920	$ 37,231,920	$ 37,231,920	$ 37,231,920		36,933,073		$ 37,231,920
Interest rate (as a percent)													0.25%	0.25%	0.25%	0.25%	0.25%				0.25%
Commitments relating to AWS-3 Auction
Noncontrolling Interest in Variable Interest Entity													$ 10,000,000	$ 10,000,000	$ 10,000,000	$ 10,000,000	$ 10,000,000				$ 10,000,000
5G Network Development
Commitment and Contingencies
Percentage of population for deploy 5G services														70.00%
Number Of Construction Sites Completed																18,000	18,000
Number Of Cell Sites To Provide Broadband | site																16,000
Payment to customer																					30,000,000
Commitments relating to AWS-3 Auction
Noncontrolling Interest in Variable Interest Entity													10,000,000	$ 10,000,000	10,000,000	$ 10,000,000	$ 10,000,000				10,000,000
Capitalized interest on FCC authorizations
Commitment and Contingencies
Percentage of Population 5G Services offered																						70.00%
FCC authorizations													8,000,000	$ 8,000,000	8,000,000	$ 8,000,000	8,000,000		8,000,000		8,000,000
Spectrum Purchase Agreement
Commitment and Contingencies
Purchase price					$ 3,590,000
Asset Purchase Agreement, Termination Fee Payable																							$ 72,000
Class B common stock | Northstar Manager LLC
Commitment and Contingencies
Equity Method Investment, Ownership Percentage				3.00%
Minimum
Commitment and Contingencies
Percentage of population for deploy 5G services														70.00%
Minimum Tower | site																15,000
Northstar Manager LLC
Commitment and Contingencies
Accrued redeemable non-controlling interest													100,000	$ 100,000	100,000	$ 100,000	100,000				100,000
Northstar Manager LLC | Class B common stock
Commitment and Contingencies
Ownership percentage				97.00%
Payment For Purchase Agreement				$ 312,000
Wireless
Commitment and Contingencies
Network development current and future expenditures															10,000,000				10,000,000	$ 10,000,000
Percentage of population for deploy 5G services			20.00%								70.00%	20.00%
Payment to customer																					30,000,000
FCC authorizations													19,699,940	$ 19,699,940	19,699,940	19,699,940	19,699,940				19,699,940
Wireless | Maximum
Commitment and Contingencies
Percentage of population for deploy 5G services		70.00%									70.00%			70.00%
Wireless | Forecast
Commitment and Contingencies
Percentage of population for deploy 5G services											70.00%
Wireless | At least 50% by June 2023
Commitment and Contingencies
Percentage of population for deploy 5G services											50.00%			50.00%
H Block Licenses
Commitment and Contingencies
FCC authorizations													1,671,506	$ 1,671,506	1,671,506	1,671,506	1,671,506				1,671,506
DBS Licenses.
Commitment and Contingencies
FCC authorizations													677,409	677,409	677,409	677,409	677,409				677,409
700 MHz Licenses
Commitment and Contingencies
FCC authorizations													711,871	711,871	711,871	711,871	711,871				711,871
600 MHz Licenses
Commitment and Contingencies
FCC authorizations													6,213,335	6,213,335	6,213,335	6,213,335	6,213,335				6,213,335
MVDDS
Commitment and Contingencies
FCC authorizations													24,000	24,000	24,000	24,000	24,000				24,000
28 GHz Licenses
Commitment and Contingencies
FCC authorizations													2,883	2,883	2,883	2,883	2,883				2,883
24 GHz Licenses
Commitment and Contingencies
FCC authorizations													11,772	11,772	11,772	11,772	11,772				11,772
37 Ghz, 39 Ghz and 47 Ghz Licenses
Commitment and Contingencies
FCC authorizations													202,533	202,533	202,533	202,533	202,533				202,533
3550-3650 MHz Licenses
Commitment and Contingencies
FCC authorizations													912,939	912,939	912,939	912,939	912,939				912,939
Ghz 3.7 to 3.98
Commitment and Contingencies
FCC authorizations													2,731	2,731	2,731	2,731	2,731				2,731
Ghz 3.45 to 3.55
Commitment and Contingencies
FCC authorizations													7,327,989	7,327,989	7,327,989	7,327,989	7,327,989				7,327,989
1695-1710 MHz, 1755-1780 MHz, and 2155-2180 MHz
Commitment and Contingencies
FCC authorizations													972	972	972	972	972				972
Northstar Licenses
Commitment and Contingencies
FCC authorizations													$ 5,618,930	5,618,930	5,618,930	5,618,930	5,618,930				5,618,930
AWS-3 Licenses
Commitment and Contingencies
Accelerated build out period													2 years
FCC authorizations													$ 9,890,389	9,890,389	9,890,389	9,890,389	9,890,389				9,890,389
AWS-4 Licenses
Commitment and Contingencies
FCC authorizations													1,940,000	1,940,000	1,940,000	1,940,000	1,940,000				1,940,000
SNR Licenses
Commitment and Contingencies
FCC authorizations													4,271,459	4,271,459	4,271,459	4,271,459	4,271,459				4,271,459
Capitalized Interest
Commitment and Contingencies
FCC authorizations													7,641,591	7,641,591	7,641,591	7,641,591	7,641,591				7,641,591
Northstar Spectrum And SNR Holdco
Commitment and Contingencies
Ownership interest													485,000	485,000	485,000	485,000	485,000		464,000		485,000
Commitments relating to AWS-3 Auction
Noncontrolling Interest in Variable Interest Entity													$ 10,000,000	$ 10,000,000	10,000,000	$ 10,000,000	$ 10,000,000				$ 10,000,000
Northstar Spectrum And SNR Holdco | AWS-3 Licenses
Commitment and Contingencies
Interim Build-out Requirement (as a percent)														40.00%
Final Build-out Requirement (as a percent)														75.00%
Accelerated period to meet Final Build-Out Requirement on failure to meet Interim Build-Out Requirement													2 years
Commitments relating to AWS-3 Auction
Percentage of bidding credit														25.00%
Northstar Wireless or Northstar Spectrum
Commitment and Contingencies
Interim payment percentage														15.00%
Re-Auction payment															1,892,000
Overpayment of interim payment															334,000
Northstar Wireless or Northstar Spectrum | Preferred Class A
Commitment and Contingencies
Ownership percentage														100.00%
Northstar Wireless or Northstar Spectrum | Northstar Manager LLC
Commitments relating to AWS-3 Auction
Controlling interest owned by other companies														15.00%
Equity contribution																		$ 133,000
Northstar Wireless or Northstar Spectrum | American II.
Commitment and Contingencies
Ownership percentage														85.00%
Loan made															69,000
Commitments relating to AWS-3 Auction
Equity contribution																		7,621,000
Northstar Wireless or Northstar Spectrum | AWS 3 Auction
Commitment and Contingencies
Interim Payment															$ 334,000
Interim payment percentage														15.00%
Northstar Wireless or Northstar Spectrum | Northstar Licenses
Commitment and Contingencies
Number of wireless spectrum licenses | item													261	261	261	261	261				261
Commitments relating to AWS-3 Auction
Gross winning bids															$ 5,619,000
Bidding credit value									$ 1,961,000
Northstar Wireless or Northstar Spectrum | AWS-3 Licenses
Commitment and Contingencies
Non-payment gross winning bids													$ 2,226,000	$ 2,226,000	2,226,000	$ 2,226,000	$ 2,226,000				$ 2,226,000
Commitments relating to AWS-3 Auction
Gross winning bids															7,845,000
Percentage of bidding credit														25.00%
Net winning bid															5,884,000
Northstar Wireless or Northstar Spectrum | SNR Licenses
Commitments relating to AWS-3 Auction
Percentage of bidding credit									25.00%
SNR Wireless or SNR Wireless Holdco
Commitment and Contingencies
Non-payment gross winning bids													$ 1,211,000	$ 1,211,000	1,211,000	$ 1,211,000	$ 1,211,000				$ 1,211,000
Interim payment percentage														15.00%
Re-Auction payment															1,029,000
Overpayment of interim payment															$ 182,000
SNR Wireless or SNR Wireless Holdco | Maximum
Commitment and Contingencies
Preferred stock quarterly distribution (as a percent)							12.00%
SNR Wireless or SNR Wireless Holdco | Minimum
Commitment and Contingencies
Preferred stock quarterly distribution (as a percent)							8.00%
SNR Wireless or SNR Wireless Holdco | SNR Wireless Management LLC
Commitments relating to AWS-3 Auction
Controlling interest owned by other companies														15.00%
Equity contribution																		93,000
SNR Wireless or SNR Wireless Holdco | American II.
Commitment and Contingencies
Window of days for management to put its interest						360 days	270 days	90 days
Additional days allowed for management to put its interest							90 days
SNR Wireless or SNR Wireless Holdco | American II. | Maximum
Commitment and Contingencies
Preferred stock quarterly distribution (as a percent)							12.00%
Window of days for management to put its interest							90 days
SNR Wireless or SNR Wireless Holdco | American II. | Minimum
Commitment and Contingencies
Preferred stock quarterly distribution (as a percent)							8.00%
Window of days for management to put its interest								30 days
SNR Wireless or SNR Wireless Holdco | American III
Commitment and Contingencies
Number of wireless spectrum licenses | item													244	244	244	244	244				244
Loan made															$ 344,000
Debt outstanding amount																		5,065,000
Principal amount of debt																		500,000
Window of days for management to put its interest							90 days	30 days
Additional days allowed for management to put its interest							90 days
Additional loan to pay gross winning bids															344,000
Commitments relating to AWS-3 Auction
Equity contribution																		$ 5,590,000
Gross winning bids															4,271,000
Value of ownership rights accrued													$ 385,000	$ 385,000	$ 385,000	$ 385,000	$ 385,000				$ 385,000
SNR Wireless or SNR Wireless Holdco | American III | Preferred Class A
Commitment and Contingencies
Number shares issued in conversion | item																		5,065,415
Preferred stock quarterly distribution (as a percent)																		12.00%
SNR Wireless or SNR Wireless Holdco | American III | Maximum
Commitment and Contingencies
Interest rate (as a percent)																		12.00%
SNR Wireless or SNR Wireless Holdco | American III | Minimum
Commitment and Contingencies
Interest rate (as a percent)													6.00%	6.00%	6.00%	6.00%	6.00%				6.00%
SNR Wireless or SNR Wireless Holdco | AWS 3 Auction
Commitments relating to AWS-3 Auction
Gross winning bids															$ 5,482,000
SNR Wireless or SNR Wireless Holdco | AWS-3 Licenses
Commitment and Contingencies
Non-payment gross winning bids													$ 1,211,000	$ 1,211,000	1,211,000	$ 1,211,000	$ 1,211,000				$ 1,211,000
SNR Wireless or SNR Wireless Holdco | SNR Licenses
Commitment and Contingencies
Interim Payment															182,000
Non-payment gross winning bids													1,211,000	$ 1,211,000	1,211,000	1,211,000	1,211,000				1,211,000
Interim payment percentage														15.00%
Additional Bid Withdrawal Payment															3,000
Commitments relating to AWS-3 Auction
Percentage of bidding credit														25.00%
Net winning bid															4,112,000
Bid withdrawal payment															8,000
Bidding credit value									$ 1,370,000
SNR Wireless or SNR Wireless Holdco Class B Common Interests | American III
Commitment and Contingencies
Ownership percentage														85.00%
SNR Wireless or SNR Wireless Holdco Class A Common Interests | American III
Commitment and Contingencies
Ownership percentage														100.00%
American II. | Northstar Manager LLC | Class B common stock
Commitment and Contingencies
Ownership percentage				80.00%
American II. | American II.
Commitments relating to AWS-3 Auction
Value of ownership rights accrued													100,000	$ 100,000	100,000	100,000	100,000				100,000
Prior Arrangement | Northstar Licenses
Commitment and Contingencies
Non-payment gross winning bids													2,226,000	2,226,000	2,226,000	2,226,000	2,226,000				2,226,000
Prior Arrangement | Northstar Wireless or Northstar Spectrum
Commitment and Contingencies
Non-payment gross winning bids													2,226,000	2,226,000	2,226,000	2,226,000	$ 2,226,000				2,226,000
Commitments relating to AWS-3 Auction
Number of licenses returned | item																	84
Prior Arrangement | SNR Wireless or SNR Wireless Holdco | SNR Licenses
Commitments relating to AWS-3 Auction
Number of licenses returned | item																	113
Northstar Operative Agreement | Northstar Spectrum And SNR Holdco | American II.
Commitment and Contingencies
Debt outstanding amount																		$ 6,870,000
Northstar Operative Agreement | Northstar Wireless or Northstar Spectrum | American II.
Commitment and Contingencies
Principal amount of debt																		$ 500,000
Removal of consent for unsecured financing and equipment financing							$ 25,000
Northstar Operative Agreement | Northstar Wireless or Northstar Spectrum | American II. | Preferred Class A
Commitment and Contingencies
Number shares issued in conversion | item																		6,870,493
Preferred stock quarterly distribution (as a percent)																		12.00%
Northstar Operative Agreement | Northstar Wireless or Northstar Spectrum | American II. | Maximum
Commitment and Contingencies
Interest rate (as a percent)																		12.00%
Loan balance maturity period							10 years
Northstar Operative Agreement | Northstar Wireless or Northstar Spectrum | American II. | Minimum
Commitment and Contingencies
Interest rate (as a percent)																		6.00%
Loan balance maturity period								7 years
SNR Operative Agreement | SNR Wireless or SNR Wireless Holdco | American III
Commitment and Contingencies
Loan balance maturity period							10 years	7 years
Removal of consent for unsecured financing and equipment financing							$ 25,000
5G network deployment obligations
Commitment and Contingencies
Total													2,281,000	2,281,000	2,281,000	2,281,000	$ 2,281,000				2,281,000
Contractual Obligation													2,281,000	2,281,000	2,281,000	2,281,000	2,281,000				2,281,000
Interest expense on finance lease obligations
Commitment and Contingencies
Total													432,000	432,000	432,000	432,000	432,000				432,000
Contractual Obligation													432,000	432,000	432,000	432,000	432,000				432,000
Satellite-related obligations
Commitment and Contingencies
2023 (remaining nine months)													3,635,929	3,635,929	3,635,929	3,635,929	3,635,929				3,635,929
2024													2,469,468	2,469,468	2,469,468	2,469,468	2,469,468				2,469,468
2025													1,935,955	1,935,955	1,935,955	1,935,955	1,935,955				1,935,955
2026													1,744,978	1,744,978	1,744,978	1,744,978	1,744,978				1,744,978
2027													1,371,171	1,371,171	1,371,171	1,371,171	1,371,171				1,371,171
Thereafter													3,525,563	3,525,563	3,525,563	3,525,563	3,525,563				3,525,563
Total													14,683,064	14,683,064	14,683,064	14,683,064	14,683,064		15,115,000		14,683,064
Decrease in contractual obligations															264,000
Contractual Obligation													$ 14,683,064	$ 14,683,064	$ 14,683,064	$ 14,683,064	$ 14,683,064		$ 15,115,000		$ 14,683,064
SNR Credit Agreement | SNR Wireless or SNR Wireless Holdco
Commitment and Contingencies
Loan made																		$ 500,000
SNR Credit Agreement | SNR Wireless or SNR Wireless Holdco | American III
Commitment and Contingencies
Loan made																		500,000
Northstar Credit Agreement | Northstar Wireless or Northstar Spectrum | American II.
Commitment and Contingencies
Loan made																		500,000
Principal amount of debt																		$ 500,000
Subsequent event | Wireless
Commitment and Contingencies
Percentage of population for deploy 5G services											70.00%