Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Net loss	$ (2,627)	$ (4,835)
Other comprehensive income (loss), net of tax:
Foreign currency translation gain (loss) during the period	(1,216)	169
Unrealized holding gain (loss) on securities available-for-sale	(1,225)	25
Other comprehensive (loss) income, net of tax	(2,441)	194
Comprehensive income (loss) attributable to Magellan Petroleum Corporation	$ (5,068)	$ (4,641)