Annual report pursuant to Section 13 and 15(d)

Internally Developed Software (Details)

v3.10.0.1
Internally Developed Software (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Internally developed software $ 70,410 $ 46,342  
Less accumulated amortization (32,201) (24,168)  
Internally developed software, net 38,209 22,174  
Amortization expense $ 8,033 $ 5,310 $ 3,646
Internally developed software      
Estimated Useful Life 5 years