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Income Taxes | 6 Months Ended
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Jun. 30, 2017
Income Tax Disclosure [Abstract] |
Income taxes | Income taxes The total amount of unrecognized tax benefits that, if recognized, would impact the effective tax rate was approximately $9.9 million as of June 30, 2017, and $10.8 million as of December 31, 2016. The amount of accrued interest and penalties payable related to unrecognized tax benefits was $1.1 million as of June 30, 2017, and $1.5 million as of December 31, 2016. It is reasonably possible that the amount of unrecognized benefits with respect to certain of our unrecognized tax positions will increase or decrease within the next 12 months. These changes may be the result of settlement of ongoing audits, lapses of statutes of limitations or other regulatory developments. At this time, we estimate the amount of gross unrecognized tax positions may be reduced by up to approximately $0.7 million within the next 12 months primarily due to lapses of statutes of limitations and settlement of ongoing audits in various jurisdictions.

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -URI http://asc.fasb.org/topic&trid=2144680 + Details
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