Correction of Interim Consolidated Financial Statements (Details 3) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended	9 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Mar. 31, 2014	Dec. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Consolidated statements of cash flows
Net income (loss)	$ 16,696	$ 14,248	$ 18,932	$ 6,370	$ 33,180	$ 49,876	$ 14,515
Deferred income tax			546		176	3,331	661
Net cash provided (used) by operating activities			17,360		25,763	46,842	$ 16,630
As reported
Consolidated statements of cash flows
Net income (loss)	19,425	15,405	20,481		35,886	55,311
Deferred income tax			(1,003)		(2,530)	(2,104)
Net cash provided (used) by operating activities			17,360		25,763	46,842
Correction
Consolidated statements of cash flows
Net income (loss)	$ (2,729)	$ (1,157)	(1,549)		(2,706)	(5,435)
Deferred income tax			$ 1,549		$ 2,706	$ 5,435
Net cash provided (used) by operating activities