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Other Assets and Accrued Liabilities - Current Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Jan. 01, 2019
Dec. 31, 2018
Other Liabilities Disclosure [Abstract]      
Sales and property taxes payable $ 5,171   $ 4,281
Asset retirement obligations 478   582
Accrued programming costs 3,021   2,886
Financing leases 88    
Other current liabilities 5,755   6,814
Accrued liabilities and other $ 14,513 $ 14,151 $ 14,563