Income Taxes	6 Months Ended
Jun. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Note 8 — Income Taxes Forrester provides for income taxes on an interim basis according to management’s estimate of the effective tax rate expected to be applicable for the full fiscal year. Certain items such as changes in tax rates and tax benefits related to disqualifying dispositions of incentive stock options are treated as discrete items and are recorded in the period in which they arise. Income tax expense for the six months ended June 30, 2015 was $4.0 million resulting in an effective tax rate of 42.1% for the period. Income tax expense for the six months ended June 30, 2014 was $3.0 million resulting in an effective tax rate of 41.3% for the period. The increase in the effective tax rate for the six months ended June 30, 2015 as compared to the prior year period is primarily due to a $0.3 million loss on the liquidation of a foreign subsidiary in the 2015 period for which a tax benefit could not be recognized, partially offset by a $0.2 million expense in the 2014 period for a U.S. state audit that did not recur in 2015.

Income Taxes

6 Months Ended

Jun. 30, 2015

Note 8 — Income Taxes

Forrester provides for income taxes on an interim basis according to management’s estimate of the effective tax rate expected to be applicable for the full fiscal year. Certain items such as changes in tax rates and tax benefits related to disqualifying dispositions of incentive stock options are treated as discrete items and are recorded in the period in which they arise.

Income tax expense for the six months ended June 30, 2015 was $4.0 million resulting in an effective tax rate of 42.1% for the period. Income tax expense for the six months ended June 30, 2014 was $3.0 million resulting in an effective tax rate of 41.3% for the period. The increase in the effective tax rate for the six months ended June 30, 2015 as compared to the prior year period is primarily due to a $0.3 million loss on the liquidation of a foreign subsidiary in the 2015 period for which a tax benefit could not be recognized, partially offset by a $0.2 million expense in the 2014 period for a U.S. state audit that did not recur in 2015.