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Business Combination (Schedule of Purchase Price Allocation) (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Apr. 28, 2017
Dec. 31, 2016
Business Acquisition [Line Items]        
Goodwill $ 14,189 $ 14,707   $ 2,343
Nesscap        
Business Acquisition [Line Items]        
Cash and cash equivalents     $ 909  
Accounts receivable     2,545  
Inventories     4,397  
Prepaid expenses and other assets     764  
Property and equipment     3,314  
Intangible assets     11,800  
Accounts payable, accrued compensation and other liabilities     (5,713)  
Employee severance obligation     (3,340)  
Total identifiable net assets     14,676  
Goodwill     11,624  
Total purchase price     $ 26,300