Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	5 Months Ended		12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013	Dec. 31, 2012	Jul. 31, 2011
Summary of changes in accumulated other comprehensive income by component, including reclassifications
Accumulated other comprehensive income (loss), Unrealized loss on available-for-sale securities, Beginning balance			$ (15)
Accumulated other comprehensive income (loss), Foreign currency translation, Beginning balance	357	(24)	285	(137)	(24)
Accumulated other comprehensive income (loss), Net, Beginning balance	357	(24)	270	(137)	(24)
Other comprehensive (loss) income before reclassifications, Unrealized loss on available-for-sale securities			(55)
Other comprehensive (loss) income before reclassifications, Foreign currency translation			460
Other comprehensive (loss) income before reclassifications, Accumulated other comprehensive income			405
Amounts reclassified from accumulated other comprehensive income, Unrealized loss on available-for-sale securities			70
Amounts reclassified from accumulated other comprehensive income, Foreign currency translation
Amounts reclassified from accumulated other comprehensive income, Accumulated other comprehensive income			70
Amounts reclassified from accumulated other comprehensive income, Location of (Gain) loss recognized			Interest income
Other comprehensive income (loss) attributable to Genie, unrealized loss on available-for-sale securities			15	(15)
Other comprehensive income (loss) attributable to Genie, Foreign currency translation	(494)		460	422	381
Other comprehensive income (loss) attributable to Genie, Accumulated other comprehensive income (loss)	(494)		475	407	381
Accumulated other comprehensive income (loss), Unrealized loss on available-for-sale securities, Ending balance				(15)
Accumulated other comprehensive income (loss), Foreign currency translation, Ending balance	(137)		745	285	357
Accumulated other comprehensive income (loss), Net, Ending balance	$ (137)		$ 745	$ 270	$ 357