Income Taxes	9 Months Ended
Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income tax expense related to continuing operations for the three and nine months ended September 30, 2019 was $12.6 million and $17.8 million, respectively. Income tax expense related to continuing operations for the three and nine months ended September 30, 2018 was $11.1 million and $16.8 million, respectively. Income tax expense related to continuing operations for the three months ended September 30, 2019 compared with the three months ended September 30, 2018 increased due to a $2.8 million valuation allowance adjustment against a deferred tax asset due to a lower projected income in a certain jurisdiction, partially offset by reduction in income. Income tax expense related to continuing operations for the nine months ended September 30, 2019 compared with the nine months ended September 30, 2018 increases primarily due to an $8.3 million income tax benefit arising from the release of adjustments to certain existing deferred tax asset valuation allowances as the result of the Altek acquisition in 2018 not recurring in 2019, and a $2.8 million valuation allowance adjustment against a deferred tax asset due to a lower projected income in a certain jurisdiction, partially offset by reduction in income. An income tax benefit from an uncertain tax position may be recognized when it is more likely than not that the position will be sustained upon examination, based on technical merits, including resolutions of any related appeals or litigation processes. The reserve for uncertain tax positions at September 30, 2019 was $4.4 million, including interest and penalties. Within the next twelve months, it is reasonably possible that no unrecognized income tax benefits will be recognized upon settlement of tax examinations and the expiration of various statutes of limitations.

Income Taxes

9 Months Ended

Sep. 30, 2019

Income tax expense related to continuing operations for the three and nine months ended September 30, 2019 was $12.6 million and $17.8 million, respectively. Income tax expense related to continuing operations for the three and nine months ended September 30, 2018 was $11.1 million and $16.8 million, respectively. Income tax expense related to continuing operations for the three months ended September 30, 2019 compared with the three months ended September 30, 2018 increased due to a $2.8 million valuation allowance adjustment against a deferred tax asset due to a lower projected income in a certain jurisdiction, partially offset by reduction in income. Income tax expense related to continuing operations for the nine months ended September 30, 2019 compared with the nine months ended September 30, 2018 increases primarily due to an $8.3 million income tax benefit arising from the release of adjustments to certain existing deferred tax asset valuation allowances as the result of the Altek acquisition in 2018 not recurring in 2019, and a $2.8 million valuation allowance adjustment against a deferred tax asset due to a lower projected income in a certain jurisdiction, partially offset by reduction in income.

An income tax benefit from an uncertain tax position may be recognized when it is more likely than not that the position will be sustained upon examination, based on technical merits, including resolutions of any related appeals or litigation processes. The reserve for uncertain tax positions at September 30, 2019 was $4.4 million, including interest and penalties. Within the next twelve months, it is reasonably possible that no unrecognized income tax benefits will be recognized upon settlement of tax examinations and the expiration of various statutes of limitations.