Other Intangible Assets (Schedule of Intangible Asset by Class) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jul. 24, 2015
Schedule of Finite-Lived Intangible Assets and Indefinite-lived intangible assets [Line Items]
Gross Amount			$ 61,617	$ 63,215
Accumulated Amortization			60,679	61,079
Net			938	2,136
Finite-lived intangible assets acquired		$ 200
Slingo and Social Casino
Schedule of Finite-Lived Intangible Assets and Indefinite-lived intangible assets [Line Items]
Intangible assets disposed of					$ 5,700	$ 5,700
Customer relationships
Schedule of Finite-Lived Intangible Assets and Indefinite-lived intangible assets [Line Items]
Gross Amount			29,308	30,182
Accumulated Amortization			28,781	29,236
Net			527	946
Developed technology
Schedule of Finite-Lived Intangible Assets and Indefinite-lived intangible assets [Line Items]
Gross Amount			23,574	24,047
Accumulated Amortization			23,263	23,244
Net			311	803
Patents, trademarks and tradenames
Schedule of Finite-Lived Intangible Assets and Indefinite-lived intangible assets [Line Items]
Gross Amount			3,530	3,717
Accumulated Amortization			3,430	3,398
Net			100	319
Service contracts
Schedule of Finite-Lived Intangible Assets and Indefinite-lived intangible assets [Line Items]
Gross Amount			5,205	5,269
Accumulated Amortization			5,205	5,201
Net			$ 0	$ 68
Domain Name
Schedule of Finite-Lived Intangible Assets and Indefinite-lived intangible assets [Line Items]
Gain on sale of intangible asset	$ 2,000