CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Impairment and amortization of intangible assets acquired from a related party	$ 5,000	$ 0	$ 0
Impairment of prepaid royalties and minimum guarantees paid to a related party	9,866	0	0
Purchase of intangible assets from a related party	$ 2,500	$ 0	$ 0

The amount of expense recognized in the current period that reflects the allocation of the costs and impairments of intangible assets of related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, over the expected benefit period of such assets. This element applies only to intangible assets used in the production of goods.

No definition available.

Name:	gluu_CostOfGoodsSoldAmortizationAndImpairmentRelatedParties
Namespace Prefix:	gluu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration