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AT&T Agreement (Tables)
12 Months Ended
Dec. 31, 2020
ATT Agreement [Abstract]  
Shedule of Black-Scholes option-pricing mode
 

December 31,
2020

 

December 31,
2019

OPM Inputs/Assumptions

 

Values

 

Values

Equity Value

 

$

525,034,000

 

 

20,369,000

 

Holding Period/Term (years)

 

 

3.00

 

 

5.00

 

Volatility

 

 

59.50

%

 

51.00

%

Risk-Free Rate

 

 

0.17

%

 

1.67

%

Discount for Lack of Marketability

 

 

10.0

%

 

9.5

%