Annual report pursuant to Section 13 and 15(d)

Goodwill and Other Intangibles - Other intangible assets (Details)

v3.8.0.1
Goodwill and Other Intangibles - Other intangible assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Other intangible assets      
Gross definite-lived intangible assets $ 54,872 $ 20,932  
Accumulated amortization (21,629) (18,683)  
Net definite-lived intangible assets 33,243 2,249  
Indefinite-lived intangible assets not subject to amortization   407  
Other intangible assets, net 33,243 2,656  
Amortization expense $ 2,994 $ 795 $ 1,026