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Summary of Significant Accounting Policies (Schedule of Estimated Fair Values of Assets Acquired and Liabilities Assumed) (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Jan. 31, 2017
Dec. 31, 2016
Business Acquisition [Line Items]      
Goodwill $ 38,419   $ 931
Orlaco [Member]      
Business Acquisition [Line Items]      
Acquired companie's cash   $ 2,165  
Accounts receivable   7,929  
Inventory   9,409  
Prepaids and other current assets   298  
Property, plant and equipment   6,668  
Identifiable intangible assets   38,739  
Other long-term assets   6  
Total identifiable assets acquired   65,214  
Accounts payable   3,020  
Other current liabilities   834  
Deferred tax liabilities   10,206  
Warranty liabilitity   899  
Total liabilities assumed   14,959  
Net identifiable assets acquired   50,255  
Goodwill   33,628  
Net assets acquired   $ 83,883