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Acquisitions - EnShape GmbH Narrative (Details) - EnShape GmbH [Member] - USD ($)
Nov. 30, 2016
Oct. 27, 2016
Business Acquisition [Line Items]    
Purchase price   $ 7,901,000
Cash paid in purchase price   5,395,000
Deferred cash payment on business acquisition   1,144,000
Contingent consideration, current   1,362,000
Intangible assets, useful life 7 years  
Tax deductible goodwill   $ 328,000