Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Summary of Significant Accounting Policies [Abstract]
Accumulated Other Comprehensive Loss, Foreign Currency Translation Adjustment, Net of Tax	$ 31,831	$ 15,778	$ 44,444
Restricted Cash	$ 525	653
Number of shares authorized to be repurchased under our stock repurchase programs	1,392,892
Machine warranty, range minimum (in years)	1 year
Machine warranty, range maximum (in years)	4 years
Advertising Costs	$ 8,767	$ 8,228	$ 7,269
Buildings and improvements
Property, Plant and Equipment
Property, Plant and Equipment, Useful life, Average	30 years
Property, Plant and Equipment, Other Types | Minimum
Property, Plant and Equipment
Property, Plant and Equipment, Useful life, Average	3 years
Property, Plant and Equipment, Other Types | Maximum
Property, Plant and Equipment
Property, Plant and Equipment, Useful life, Average	15 years