Income Taxes - Provision for (Benefit From) Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
U.S. federal	$ 15,327	$ 24,221	$ 42,690
State and local	1,196	1,598	4,255
Foreign	4,264	4,362	6,127
Total current	20,787	30,181	53,072
Deferred:
U.S. federal	(12,815)	(2,255)	(73,544)
State and local	(1,156)	2,735	(1,595)
Foreign	(590)	(2,499)	(97)
Total deferred	(14,561)	(2,019)	(75,236)
Provision for (benefit from) income taxes	$ 6,226	$ 28,162	$ (22,164)