Income Taxes	3 Months Ended
Mar. 31, 2017
Income Taxes [Abstract]
Income Taxes	D. Income Taxes The effective tax rate ("ETR") for the three months ended March 31, 2017 and March 31, 2016 was 38.1% and 38.2%, respectively. ASU 2016-09, which was issued in March 2016 and became effective for interim and annual reporting periods beginning after December 15, 2016, simplifies several aspects of accounting for employee share-based payment transactions. Upon adoption of ASU 2016-09 on January 1, 2017, our accounting for excess tax benefits has changed and adopted prospectively, resulting in recognition of excess tax benefits against income tax expenses rather than additional paid-in capital.

Income Taxes

3 Months Ended

Mar. 31, 2017

D. Income Taxes

The effective tax rate ("ETR") for the three months ended March 31, 2017 and March 31, 2016 was 38.1% and 38.2%, respectively.

ASU 2016-09, which was issued in March 2016 and became effective for interim and annual reporting periods beginning after December 15, 2016, simplifies several aspects of accounting for employee share-based payment transactions. Upon adoption of ASU 2016-09 on January 1, 2017, our accounting for excess tax benefits has changed and adopted prospectively, resulting in recognition of excess tax benefits against income tax expenses rather than additional paid-in capital.