Income Taxes	3 Months Ended
Mar. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	10. Income Taxes The effective tax rates for the three months ended March 31, 2017 and 2016 were 25.7% and 22.1%, respectively. The increase in the effective tax rate for the three months ended March 31, 2017 relative to the prior comparable period is principally due to the larger benefit from the discrete items in 2016 compared to 2017. The discrete items for the three months ended March 31, 2017 primarily resulted from the gain on the sale of PMI. The discrete items for the three months ended March 31, 2016 principally resulted from the impact on deferred tax balances of a tax rate reduction in a non-US jurisdiction. In the first quarter of 2017, stock-based compensation excess tax benefits of $3,346 were reflected in the Condensed Consolidated Statement of Earnings as a component of the provision for income taxes as a result of adopting Accounting Standards Update ("ASU") 2016-09, Compensation Stock Compensation (Topic 718). See Note 18 — Recent Accounting Pronouncements regarding the adoption of the standard. Dover and its subsidiaries file tax returns in the U.S., including various state and local returns, and in other foreign jurisdictions. We believe adequate provision has been made for all income tax uncertainties. The Company is routinely audited by taxing authorities in its filing jurisdictions, and a number of these audits are currently underway. The Company believes that within the next twelve months uncertain tax positions may be resolved and statutes of limitations will expire, which could result in a decrease in the gross amount of unrecognized tax benefits of approximately zero to $17,905.

Income Taxes

3 Months Ended

Mar. 31, 2017

10. Income Taxes

The effective tax rates for the three months ended March 31, 2017 and 2016 were 25.7% and 22.1%, respectively. The increase in the effective tax rate for the three months ended March 31, 2017 relative to the prior comparable period is principally due to the larger benefit from the discrete items in 2016 compared to 2017.

The discrete items for the three months ended March 31, 2017 primarily resulted from the gain on the sale of PMI. The discrete items for the three months ended March 31, 2016 principally resulted from the impact on deferred tax balances of a tax rate reduction in a non-US jurisdiction.

In the first quarter of 2017, stock-based compensation excess tax benefits of $3,346 were reflected in the Condensed Consolidated Statement of Earnings as a component of the provision for income taxes as a result of adopting Accounting Standards Update ("ASU") 2016-09, Compensation Stock Compensation (Topic 718). See Note 18 — Recent Accounting Pronouncements regarding the adoption of the standard.

Dover and its subsidiaries file tax returns in the U.S., including various state and local returns, and in other foreign jurisdictions. We believe adequate provision has been made for all income tax uncertainties. The Company is routinely audited by taxing authorities in its filing jurisdictions, and a number of these audits are currently underway. The Company believes that within the next twelve months uncertain tax positions may be resolved and statutes of limitations will expire, which could result in a decrease in the gross amount of unrecognized tax benefits of approximately zero to $17,905.