Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2019
Income Taxes [Line Items]
Effective income tax rate	132.50%	(0.90%)
Income before income taxes, domestic operations	$ (18,900)	$ 2,500
Income before income taxes, foreign operations	25,500	30,100
Liabilities for uncertain income tax positions	54,100							$ 52,500
Cash paid for income taxes	6,600	$ 6,700
Prepaid tax payments	$ 3,700							$ 3,700
California Franchise Tax Board [Member]
Income Taxes [Line Items]
Income Tax Examination, Year under Examination			2016	2015		2013	2012
Internal Revenue Service (IRS) [Member]
Income Taxes [Line Items]
Income Tax Examination, Year under Examination			2016	2015	2014	2013	2012
New York State Division of Taxation and Finance [Member]
Income Taxes [Line Items]
Income Tax Examination, Year under Examination				2015