Goodwill and Intangible Assets, including Casino Contracts (Details Textual) (USD $)	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Amortization Expense For Intangibles Including Casino Contracts	$ 693,000	$ 686,000	$ 1,400,000	$ 1,400,000

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

No definition available.

Name:	egt_AmortizationExpenseForIntangiblesIncludingCasinoContracts
Namespace Prefix:	egt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration