Restructuring, Acquisition and Divestiture Related Costs - Additional Information (Details) - Jul. 03, 2015 - USD ($) $ in Millions	Total	Total
2011 Restructuring
Restructuring Cost And Reserve [Line Items]
Restructuring plan		In November 2011, the Company announced a strategic initiative (“2011 restructuring”), which aimed to consolidate operations to reduce the Company’s cost structure and improve operational efficiency. As part of this initiative, the Company eliminated facilities through the consolidation of certain manufacturing, sales and distribution facilities and the exit of Semiconductor and Laser Systems businesses. The Company substantially completed the 2011 restructuring program by the end of 2013. Restructuring costs for the three and six months ended July 3, 2015 included facility costs related to the Company’s vacant Orlando, Florida facility, which the Company owns and was previously occupied by the Laser Systems business. These costs were recorded in the Unallocated Corporate and Shared Services Costs segment.
2015 Restructuring
Restructuring Cost And Reserve [Line Items]
Restructuring plan		During the first quarter of 2015, the Company initiated a program to eliminate redundant costs, as a result of acquisition and divestiture activities, to better align our operations to our strategic growth plans, to further integrate our business lines, and as a consequence of our productivity initiatives. During the three and six months ended July 3, 2015, the Company incurred restructuring costs of $0.1 million and $1.5 million, respectively, related to the 2015 restructuring plan. Restructuring costs incurred during the six months ended July 3, 2015 of $0.6 million, $0.5 million, $0.1 million and $0.3 million related to the Laser Products, Vision Technologies, Precision Motion and Unallocated Corporate and Shared Services Costs reportable segments, respectively.
Restructuring Costs	$ 0.1	$ 1.5
2015 Restructuring | Vision Technologies
Restructuring Cost And Reserve [Line Items]
Restructuring Costs		0.5
2015 Restructuring | Precision Motion
Restructuring Cost And Reserve [Line Items]
Restructuring Costs		0.1
2015 Restructuring | Unallocated Corporate and Shared Services
Restructuring Cost And Reserve [Line Items]
Restructuring Costs		0.3
2015 Restructuring | Laser Products
Restructuring Cost And Reserve [Line Items]
Restructuring Costs		$ 0.6