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Acquisitions Fair Value of Financial Instruments Carried at Fair Value (Details)
$ in Thousands
Mar. 31, 2019
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Contingent consideration $ 5,500
Total liabilities 5,500
Level 1  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Contingent consideration 0
Total liabilities 0
Level 2  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Contingent consideration 0
Total liabilities 0
Level 3  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Contingent consideration 5,500
Total liabilities $ 5,500