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Income taxes
3 Months Ended
Mar. 31, 2016
Income Tax Disclosure [Abstract]  
Income taxes

7.

Income taxes

As of March 31, 2016, the Company’s total liability for unrecognized tax benefits relating to tax positions that do not meet the more-likely-than-not threshold is $39,273, all of which would impact the Company’s effective tax rate if recognized. This balance represents an increase of $262 from the December 31, 2015 balance of $39,011.

The Company recognizes accrued interest and penalties related to unrecognized tax benefits in its income tax expense. At March 31, 2016 and December 31, 2015, the Company had approximately $10,173 and $9,918, respectively, accrued for interest and penalties related to unrecognized tax benefits, net of federal tax benefits.