Income Taxes

The provision for income taxes was as follows:



	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
Income tax provision	$	12,127		$	14,485		$	25,120		$	68,980
Effective tax rate	19.1		%	24.2		%	21.1		%	59.7		%

The effective tax rate for the three and six months ended June 30, 2017, is lower than the United States Federal tax rate of 35 percent mainly due to the mix of lower foreign jurisdiction tax rates, the effect of federal, foreign and state tax credits, excess tax benefits from stock compensation, and other discrete adjustments.

As of June 30, 2017, the Company had approximately $58.5 million of unrecognized tax benefits, all of which would affect the Company’s effective tax rate if recognized. The Company anticipates approximately $43.4 million of its net unrecognized tax benefits will be recognized within 12 months as the result of settlements or effective settlements with various tax authorities, the closure of certain audits and the lapse of the applicable statute of limitations.

The Company classifies interest and penalties related to unrecognized tax benefits in the income tax provision. As of June 30, 2017, the Company had $2.8 million of accrued interest and penalties related to unrecognized tax benefits that are recorded as current and non-current accrued income taxes on the Consolidated Balance Sheet.

The Company currently has the following tax years open to examination by major taxing jurisdictions:



	Tax Years:
United States Federal	2013 - 2015
State of California	2013 - 2015
State of Massachusetts	2013 - 2015
State of Oregon	2013 - 2015
Sweden	2012 - 2015
United Kingdom	2012 - 2015
Belgium	2011 - 2015