Deferred Compensation Plan (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Deferred Revenue Arrangement [Line Items]
Deferral of compensation percentage maximum	100.00%
Unrealized gain (loss)	$ 3,316	$ (758)
Distribution from deferred compensation plan	2	$ 46
Deferred compensation plan distribution (in shares)		1
Deferred compensation plan liability	$ 1,150		$ 4,729
Common Stock
Deferred Revenue Arrangement [Line Items]
Deferred compensation plan distribution (in shares)	0	1
Deferred compensation plan
Deferred Revenue Arrangement [Line Items]
Unrealized gain (loss)	$ 3,577	$ (740)