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Subsequent Events	6 Months Ended
Subsequent Events	Jun. 30, 2012
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On July 13, 2012, the Company acquired all of the capital stock of Robotronic Oy, the parent company of ProMotion Controls, Inc., a leading maker of advanced, intelligent CNC controllers used in shape-cutting machines. The purchase price of $4,476, net of cash acquired, included assumed debt and an earn-out provision based on specific sales targets. The acquisition was financed with cash on hand. The purchase price is subject to normal post-closing adjustments.