Earnings Per Share (EPS) (Tables)

12 Months Ended

Dec. 31, 2012

Earnings Per Share [Abstract]

Schedule of basic and diluted earnings per share

(thousands, except per share amounts)		2012		2011		2010
Basic EPS
Net income attributable to MTI	$	74,147	$	67,521	$	66,869
Weighted average shares outstanding		35,340		36,018		37,228
Basic earnings  per share attributable to MTI	$	2.10	$	1.87	$	1.80

Diluted EPS		2012		2011		2010
Net income attributable to MTI	$	74,147	$	67,521	$	66,869
Weighted average shares outstanding		35,340		36,018		37,228
Dilutive effect of stock options		189		218		158
Weighted average shares outstanding, adjusted		35,529		36,236		37,386
Diluted earnings per share	$	2.09	$	1.86	$	1.79