Quarterly report pursuant to Section 13 or 15(d)

Internally Developed Software, Net (Details)

v3.10.0.1
Internally Developed Software, Net (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Internally developed software $ 56,964   $ 56,964   $ 46,342
Less accumulated amortization (27,707)   (27,707)   (24,168)
Internally developed software, net 29,257   29,257   $ 22,174
Amortization expense $ 1,846 $ 1,241 $ 3,539 $ 2,400  
Internally developed software          
Estimated Useful Life     5 years