Segment Information - Schedule of Net Revenue, Operating Loss from Continuing Operations and Assets by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Total net revenue	$ 400		$ 700	$ 100
Total segment operating loss	(1,900)		(4,900)	100
Corporate and unallocated	(700)	(500)	(1,500)	(2,500)
Restructuring and other				100
Total operating loss	(2,600)	(500)	(6,400)	(2,500)
Interest expense	700		1,800
Realized losses on investments	(100)		(1,800)
Defined benefit plan adjustment			(8,500)
Other expense, net	(100)
Loss from continuing operations before income taxes	(3,500)	(500)	(18,500)	(2,500)
Total segment assets	67,200		67,200		$ 67,600
Corporate and unallocated	2,500		2,500		8,800
Total consolidated assets	69,700		69,700		76,400
Asset Management Business [Member]
Total net revenue	100		100	100
Total segment operating loss	(1,600)		(3,900)	100
Total operating loss
Total segment assets	16,400		16,400		16,800
Sports Technology Platform [Member]
Total net revenue	300		600
Total segment operating loss	(300)		(1,000)
Total operating loss
Total segment assets	$ 50,800		$ 50,800		$ 50,800