Income Taxes - Deferred (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Classification of deferred tax amounts
Non-current assets	$ 4,802	$ 18,638
Non-current liabilities	18,763	17,829
Deferred tax assets:
Allowances for doubtful accounts	1,308	2,046
Deferred branch tax benefit	10,846	15,859
State tax Federal deduction true-up	42	70
NOL credit and other carryovers	111
Fixed assets	47	43
Accrued expenses	935	1,204
Foreign tax credit	10,588	11,449
Stock compensation	3,081	3,865
Pension	397	690
Intangibles	1,355	2,286
Other DTA	438	533
Deferred tax assets, gross	15,443	38,045
Deferred tax liabilities:
Prepaid expenses	(328)	(505)
Intangibles	(17,676)	(20,910)
Interest Rate Swap	(173)
Property and equipment	(1,443)	(3,117)
Amortization expense	(9,784)	(12,704)
Total deferred tax liabilities	(29,404)	(37,236)
Total deferred tax assets		$ 809
Net deferred tax liabilities	(13,961)
Colombian content producers, Radio television and NTC nacional
Deferred tax assets:
Less: Foreign income valuation allowance	(3,117)
Puerto Rico And Latin America
Deferred tax assets:
Less: Foreign tax credit valuation allowance	$ (10,588)