Segment Reporting and Geographic Information (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019	Sep. 30, 2018	Dec. 31, 2017
Revenue:
Total revenue	$ 30.7	$ 153.4	$ 141.4
Cost of sales, excluding depreciation and amortization:
Selling, general and administrative expenses	(15.3)	(72.6)	(60.1)
Stock-based compensation expense		(0.1)
Impairment expense			7.7
Acquisition and integration related transaction expenses	(0.1)	(6.7)	(0.9)
Depreciation and amortization	(9.5)	(42.0)	(41.8)
Segment operating income (loss)	(2.4)	(13.0)	(7.3)
Net operating loss	2.4	13.0	(7.3)
Total assets	186.7	327.4	207.9
Total goodwill	44.9	80.9	45.8	$ 47.1
Total capital expenditures	3.4	25.2	42.3
Server Based Gaming [Member]
Revenue:
Total revenue	22.5	84.5	103.6
Cost of sales, excluding depreciation and amortization:
Selling, general and administrative expenses	(6.9)	(23.6)	(32.1)
Stock-based compensation expense	(0.1)	(1.7)	(0.9)
Impairment expense			(0.9)
Acquisition and integration related transaction expenses
Depreciation and amortization	(7.8)	(29.1)	(34.1)
Segment operating income (loss)	2.2	3.4	5.6
Net operating loss			22.6
Total assets	93.0	80.8	103.4
Total goodwill
Total capital expenditures	2.1	12.3	35.3
Virtual Sports [Member]
Revenue:
Total revenue	8.2	37.0	37.8
Cost of sales, excluding depreciation and amortization:
Selling, general and administrative expenses	(3.2)	(8.7)	(10.7)
Stock-based compensation expense	(0.1)	(1.4)	(0.8)
Impairment expense			(0.8)
Acquisition and integration related transaction expenses
Depreciation and amortization	(1.4)	(5.5)	(6.3)
Segment operating income (loss)	2.4	18.2	12.4
Net operating loss			16.1
Total assets	68.1	66.8	69.5
Total goodwill	44.9	46.4	45.8
Total capital expenditures	1.2	5.9	6.8
Corporate Functions [Member]
Revenue:
Total revenue
Cost of sales, excluding depreciation and amortization:
Selling, general and administrative expenses	(5.2)	(20.2)	(17.3)
Stock-based compensation expense	(1.4)	(5.9)	(5.7)
Impairment expense			(5.7)
Acquisition and integration related transaction expenses	(0.1)	(6.7)	(0.9)
Depreciation and amortization	(0.3)	(1.4)	(1.4)
Segment operating income (loss)	(7.0)	(34.2)	(25.3)
Net operating loss			(46.0)
Total assets	25.6	23.1	35.0
Total goodwill
Total capital expenditures	0.1	2.6	0.2
Acquired Businesses [Member]
Revenue:
Total revenue		32.9
Cost of sales, excluding depreciation and amortization:
Selling, general and administrative expenses		(20.1)
Stock-based compensation expense
Acquisition and integration related transaction expenses
Depreciation and amortization		(6.0)
Segment operating income (loss)		(0.4)
Total assets		156.7
Total goodwill		34.5
Total capital expenditures		4.4
Intergroup Eliminations [Member]
Revenue:
Total revenue		(1.0)
Cost of sales, excluding depreciation and amortization:
Selling, general and administrative expenses
Stock-based compensation expense
Acquisition and integration related transaction expenses
Depreciation and amortization
Segment operating income (loss)
Total assets
Total goodwill
Total capital expenditures
Service [Member]
Revenue:
Total revenue	30.0	134.9	130.9
Cost of sales, excluding depreciation and amortization:
Cost of goods and services sold	(6.0)	(23.5)	(22.6)
Service [Member] | Server Based Gaming [Member]
Revenue:
Total revenue	21.8	71.0	93.1
Cost of sales, excluding depreciation and amortization:
Cost of goods and services sold	(4.9)	(17.6)	(18.0)
Service [Member] | Virtual Sports [Member]
Revenue:
Total revenue	8.2	37.0	37.8
Cost of sales, excluding depreciation and amortization:
Cost of goods and services sold	(1.1)	(3.2)	(4.6)
Service [Member] | Corporate Functions [Member]
Revenue:
Total revenue
Cost of sales, excluding depreciation and amortization:
Cost of goods and services sold
Service [Member] | Acquired Businesses [Member]
Revenue:
Total revenue		27.6
Cost of sales, excluding depreciation and amortization:
Cost of goods and services sold		(3.4)
Service [Member] | Intergroup Eliminations [Member]
Revenue:
Total revenue		(0.7)
Cost of sales, excluding depreciation and amortization:
Cost of goods and services sold		0.7
Hardware [Member]
Revenue:
Total revenue	0.7	18.5	10.5
Cost of sales, excluding depreciation and amortization:
Cost of goods and services sold	(0.6)	12.6	(8.2)
Hardware [Member] | Server Based Gaming [Member]
Revenue:
Total revenue	0.7	13.5	10.5
Cost of sales, excluding depreciation and amortization:
Cost of goods and services sold	(0.6)	(9.1)	(8.2)
Hardware [Member] | Virtual Sports [Member]
Revenue:
Total revenue
Cost of sales, excluding depreciation and amortization:
Cost of goods and services sold
Hardware [Member] | Corporate Functions [Member]
Revenue:
Total revenue
Cost of sales, excluding depreciation and amortization:
Cost of goods and services sold
Hardware [Member] | Acquired Businesses [Member]
Revenue:
Total revenue		5.3
Cost of sales, excluding depreciation and amortization:
Cost of goods and services sold		(3.8)
Hardware [Member] | Intergroup Eliminations [Member]
Revenue:
Total revenue		(0.3)
Cost of sales, excluding depreciation and amortization:
Cost of goods and services sold		$ 0.3