8.INCOME TAXES

	Three Months Ended						Six Months Ended
	December 31,			December 31,			December 31,			December 31,
	2016			2015			2016			2015
	(Amounts in thousands, except rate)						(Amounts in thousands, except rate)

Income tax expense	$	(5,044	)	$	(4,740	)	$	(12,232	)	$	(63,917	)
Effective tax rate	15.7		%	25.4		%	18.5		%	194.3		%

The lower effective tax rate for the three months ended December 31, 2016, is primarily due to lower discrete charges as compared to the three months ended December 31, 2015. The lower effective tax rate for the six months ended December 31, 2016, is primarily related to the discrete tax impacts attributable to the Company’s Andacollo transactions and the liquidation of our Chilean subsidiary in the prior year.