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Business Combination Business Combination, Intangible Assets (Details)
6 Months Ended
Jun. 30, 2018
USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill $ 17,520,000
Noncompete Agreements [Member]  
Acquired Finite-Lived Intangible Assets [Line Items]  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill $ 1,910,000
Finite-Lived Intangible Asset, Useful Life 5 years
Trademarks [Member]  
Acquired Finite-Lived Intangible Assets [Line Items]  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill $ 1,610,000
Finite-Lived Intangible Asset, Useful Life 25 years
Developed Technology Rights [Member]  
Acquired Finite-Lived Intangible Assets [Line Items]  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill $ 4,420,000
Finite-Lived Intangible Asset, Useful Life 7 years
Customer Relationships [Member]  
Acquired Finite-Lived Intangible Assets [Line Items]  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill $ 9,580,000
Finite-Lived Intangible Asset, Useful Life 12 years