XML 62 R49.htm IDEA: XBRL DOCUMENT v3.6.0.2
Goodwill And Intangible Assets (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Goodwill [Line Items]      
Goodwill impairment charge $ 0 $ 0 $ 0
Impairment of finite-lived intangible assets 0 0 0
Amortization expense $ 4,900 $ 3,000 $ 2,400
Weighted average remaining lives of identifiable intangible assets 6 years 1 month 6 days    
Minimum [Member]      
Goodwill [Line Items]      
Intangible assets, estimated useful lives 2 years    
Maximum [Member]      
Goodwill [Line Items]      
Intangible assets, estimated useful lives 25 years