Annual report pursuant to Section 13 and 15(d)

Income Taxes - Deferred Taxes (Details)

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Income Taxes - Deferred Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Deferred tax assets:    
Tax loss and tax credit carryforwards $ 66,329 $ 56,056
Accrued stock-based compensation 7,969 5,571
Deferred revenue 1,562 1,430
Other 114 44
Total deferred tax assets 75,974 63,101
Less: valuation allowance (8,021) (7,773)
Net deferred tax assets 67,953 55,328
Deferred tax liabilities:    
Investments (1,067,492) (1,020,869)
Intangible assets (46) (261)
Other (74) (27)
Total deferred tax liabilities (1,067,612) (1,021,157)
Net deferred tax asset (liability) (999,659) $ (965,829)
Increase (decrease) in valuation allowance 200  
Charter    
Deferred tax liabilities:    
Investments $ (1,067,500)