Other Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2018
Other income
Gain on equity accounted for investments		$ 4,935
Proceeds on contingent consideration from equity investment	$ 1,700	6,147
Additional proceeds after escrow conditions		$ 1,020
Escrow release conditions period		5 years