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Goodwill and Intangible Assets (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Apr. 02, 2018
Jul. 03, 2017
Dec. 31, 2016
Goodwill [Line Items]          
Goodwill $ 64,489 $ 52,990     $ 0
Amortization of intangible assets $ 3,538 $ 1,552      
Huntington Steele, LLC          
Goodwill [Line Items]          
Goodwill     $ 11,499    
Archway          
Goodwill [Line Items]          
Goodwill       $ 52,990