Income Taxes	6 Months Ended
Jul. 01, 2017
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The Company’s effective tax rate for the three months ended July 1, 2017 and June 25, 2016 was 28.9% and 34.6%, respectively. The Company’s effective tax rate for the six months ended July 1, 2017 and June 25, 2016 was 34.4% and 31.0%, respectively. For the three months ended July 1, 2017, the decrease was primarily attributable to the excess tax benefit associated with stock compensation of $1.3 million as a result of the adoption of ASU 2016-09, and prior year non-deductible transaction costs associated with the purchase of WIL Research. For the six months ended July 1, 2017, the increase was primarily attributable to the tax on the gain on the divestiture of the CDMO business of $18.0 million, offset by the excess tax benefit associated with stock compensation of $8.8 million as a result of the adoption of ASU 2016-09. During the three months ended July 1, 2017, the Company’s unrecognized income tax benefits increased by $0.9 million to $26.0 million, primarily due to an additional quarter of Canadian Scientific Research and Experimental Development credit reserves and unfavorable foreign exchange movement. The amount of unrecognized income tax benefits that would impact the effective tax rate increased by $0.7 million to $22.9 million, for the same reasons noted above. As of July 1, 2017, the amount of accrued interest and penalties on unrecognized tax benefits was $2.4 million. The Company estimates that it is reasonably possible that the unrecognized tax benefits will decrease by up to $5.0 million over the next twelve-month period, primarily as a result of the outcome of a pending tax ruling and competent authority proceedings. The Company conducts business in a number of tax jurisdictions. As a result, it is subject to tax audits in jurisdictions including the U.S., U.K., China, Japan, France, Germany, and Canada. With few exceptions, the Company is no longer subject to U.S. and international income tax examinations for years before 2013. The Company and certain of its subsidiaries have ongoing tax controversies with various tax authorities in the U.S., Canada, Germany, and France. The Company does not believe that resolution of these controversies will have a material impact on its financial position or results of operations. In accordance with the Company’s policy, the remaining undistributed earnings of its non-U.S. subsidiaries remain indefinitely reinvested as of July 1, 2017, as they are required to fund needs outside the U.S. and cannot be repatriated in a manner that is substantially tax free. Income tax expense related to changes in unrecognized pension gains, losses, and prior service costs was $0.4 million and $0.1 million for the three months ended July 1, 2017 and June 25, 2016, respectively. Income tax expense related to changes in unrecognized pension gains, losses, and prior service costs was $0.6 million and $0.3 million for the six months ended July 1, 2017 and June 25, 2016, respectively.

INCOME TAXES

The Company’s effective tax rate for the three months ended July 1, 2017 and June 25, 2016 was 28.9% and 34.6%, respectively. The Company’s effective tax rate for the six months ended July 1, 2017 and June 25, 2016 was 34.4% and 31.0%, respectively. For the three months ended July 1, 2017, the decrease was primarily attributable to the excess tax benefit associated with stock compensation of $1.3 million as a result of the adoption of ASU 2016-09, and prior year non-deductible transaction costs associated with the purchase of WIL Research. For the six months ended July 1, 2017, the increase was primarily attributable to the tax on the gain on the divestiture of the CDMO business of $18.0 million, offset by the excess tax benefit associated with stock compensation of $8.8 million as a result of the adoption of ASU 2016-09.

During the three months ended July 1, 2017, the Company’s unrecognized income tax benefits increased by $0.9 million to $26.0 million, primarily due to an additional quarter of Canadian Scientific Research and Experimental Development credit reserves and unfavorable foreign exchange movement. The amount of unrecognized income tax benefits that would impact the effective tax rate increased by $0.7 million to $22.9 million, for the same reasons noted above. As of July 1, 2017, the amount of accrued interest and penalties on unrecognized tax benefits was $2.4 million. The Company estimates that it is reasonably possible that the unrecognized tax benefits will decrease by up to $5.0 million over the next twelve-month period, primarily as a result of the outcome of a pending tax ruling and competent authority proceedings.

The Company conducts business in a number of tax jurisdictions. As a result, it is subject to tax audits in jurisdictions including the U.S., U.K., China, Japan, France, Germany, and Canada. With few exceptions, the Company is no longer subject to U.S. and international income tax examinations for years before 2013.

The Company and certain of its subsidiaries have ongoing tax controversies with various tax authorities in the U.S., Canada, Germany, and France. The Company does not believe that resolution of these controversies will have a material impact on its financial position or results of operations.

In accordance with the Company’s policy, the remaining undistributed earnings of its non-U.S. subsidiaries remain indefinitely reinvested as of July 1, 2017, as they are required to fund needs outside the U.S. and cannot be repatriated in a manner that is substantially tax free.

Income tax expense related to changes in unrecognized pension gains, losses, and prior service costs was $0.4 million and $0.1 million for the three months ended July 1, 2017 and June 25, 2016, respectively. Income tax expense related to changes in unrecognized pension gains, losses, and prior service costs was $0.6 million and $0.3 million for the six months ended July 1, 2017 and June 25, 2016, respectively.