Annual report pursuant to Section 13 and 15(d)

Revenue Recognition - Contract Balances (Details)

v3.19.1
Revenue Recognition - Contract Balances (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Jan. 01, 2018
Dec. 31, 2017
Revenue from Contract with Customer [Abstract]      
Trade receivables, net $ 13,121 $ 12,645 $ 12,645
Contract assets, net - current portion 13,452 14,197  
Contract assets, net - long-term portion 16,154 10,377  
Deferred revenue $ 13,060 $ 12,892 $ 13,871