Annual report pursuant to Section 13 and 15(d)

Internally Developed Software (Details)

v3.6.0.2
Internally Developed Software (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Internally developed software $ 33,718 $ 25,109  
Less accumulated amortization (18,858) (15,212)  
Internally developed software, net 14,860 9,897  
Amortization expense $ 3,646 $ 2,658 $ 1,920
Internally developed software      
Estimated Useful Life 5 years