Income Taxes - Net Deferred Balances (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Taxes on Income and Uncertain Tax Positions [Abstract]
Deferred tax assets	$ 16,566	$ 14,745
Deferred tax liabilities	176,197	196,349
Deferred tax liabilities,net	$ 192,763	$ 211,094