Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Net revenue	$ 100
Operating expenses:
Selling, general and administrative	3,400	6,400
AAM fund expenses		500
Impairment charges:
Intangible assets		6,200
Restructuring and other	100	(4,800)
Total operating expenses	3,500	8,300
Operating loss from continuing operations	(3,400)	(8,300)
Other income (expense):
Interest expense	(300)	(100)
Net income (loss) from AAM fund activities		(900)
Unrealized gain on Arrive investment	12,100
Unrealized gain on SportBLX	3,000
Other income (expense), net		500
Total other income (expense)	14,800	(500)
Income (loss) from continuing operations before income taxes	11,400	(8,800)
Income tax benefit		100
Income (loss) from continuing operations	11,400	(8,700)
Discontinued operations:
Income from discontinued operations, net of income taxes	1,300	6,400
Gain on sale of discontinued businesses, net of income taxes	10,400	6,400
Income from discontinued operations, net of income taxes	11,700	12,800
Net Income	23,100	4,100
Less: Net income attributable to noncontrolling interest	2,900
Net Income attributable to GlassBridge Enterprises, Inc.	$ 20,200	$ 4,100
Earnings (loss) per common share attributable to GlassBridge common shareholders - basic and diluted:
Continuing operations	$ 330,150	$ (341,180)
Discontinued operations	461,450	482,350
Net Earnings	$ 791,600	$ 141,170
Weighted average common shares outstanding:
Basic and diluted	25,500	25,500