Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 55,772	$ 2,483	$ 256	$ 78,932
Other comprehensive income, net of taxes, as appropriate:
Foreign currency translation adjustments	1,953	2,635	608	3,121
Equity interest in investees' other comprehensive loss	0	(690)	0	(1,863)
Other changes in other comprehensive income	0	0	0	26
Total other comprehensive income, net of taxes	1,953	1,945	608	1,284
Comprehensive net income	57,725	4,428	864	80,216
Comprehensive (income) loss attributable to noncontrolling interest	297	(1,295)	549	(1,765)
Comprehensive net income attributable to ION	$ 58,022	$ 3,133	$ 1,413	$ 78,451