Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets (Amortization expense) (Details)

v3.7.0.1
Intangible Assets (Amortization expense) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization expense $ 3,210 $ 3,276 $ 6,557 $ 6,036