XML 68 R52.htm IDEA: XBRL DOCUMENT v3.19.1
Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Goodwill and Other Intangible Assets [Line Items]      
Goodwill, impairment $ 2,500,000    
Amortization expense 1,700,000 $ 1,900,000 $ 1,800,000
Trade names      
Goodwill and Other Intangible Assets [Line Items]      
Impairment of indefinite-lived intangible assets $ 300,000 $ 0 $ 0