Income Taxes (Details Narrative 3) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income tax contingencies
Unrecognized tax benefits	$ 134,044	$ 115,653	$ 23,482	$ 22,652
Portion of unrecognized tax benefits, which if recognized, would be recorded as an income tax benefit	110,900
Long-term deferred tax assets
Income tax contingencies
Unrecognized tax benefits	23,600	22,800
Other assets | Foreign tax authority | National Tax Services
Income tax contingencies
Unrecognized tax benefits	109,000	91,000
Long-term income taxes payable
Income tax contingencies
Unrecognized tax benefits	$ 1,900	$ 1,800