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Acquisitions - Chiaro Technologies LLC (Details) - Chiaro Technologies LLC [Member] - USD ($)
$ in Thousands
Dec. 09, 2016
Nov. 30, 2016
Business Acquisition [Line Items]    
Purchase price   $ 4,149
Cash paid in purchase price   3,538
Contingent consideration, noncurrent   611
Contingent consideration, low range   0
Contingent consideration, high range   $ 1,250
Technology-Based Intangible Assets [Member]    
Business Acquisition [Line Items]    
Intangible assets, useful life 7 years