Earnings Per Share (EPS) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Apr. 03, 2016	Mar. 29, 2015
Earnings Per Share (EPS) [Abstract]
Net income attributable to MTI	$ 33.9	$ 35.1
Weighted average shares outstanding (in shares)	34,800,000	34,700,000
Dilutive effect of stock options and stock units (in shares)	100,000	200,000
Weighted average shares outstanding, adjusted (in shares)	34,900,000	34,900,000
Basic earnings (Loss) per share attributable to MTI (in dollars per share)	$ 0.97	$ 1.01
Diluted earnings (Loss) per share attributable to MTI (in dollars per share)	$ 0.97	$ 1.01
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities not included in the weighted average commons shares outstanding calculation (in shares)	375,644	245,128