Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Contracts with Customer (Details)

v3.19.3
Revenue Recognition - Contracts with Customer (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Contract Assets    
January 1, 2019 balance   $ 35
Additions   7,142
Deductions   (5,984)
September 30, 2019 balance $ 1,193 1,193
Unbilled receivables, current    
January 1, 2019 balance   1,916
Additions   4,189
Deductions   (3,788)
September 30, 2019 balance 2,317 2,317
Unbilled receivables, non-current    
January 1, 2019 balance   786
Additions   0
Deductions   (786)
September 30, 2019 balance 0 0
Contract Costs    
January 1, 2019 balance   42
Additions   0
Deductions   (41)
September 30, 2019 balance 1 1
Contract Liabilities: Deferred Revenue    
January 1, 2019 balance   8,288
Additions   6,486
Deductions   (11,498)
September 30, 2019 balance 3,276 3,276
Change in Contract with Customer, Liability [Abstract]    
Performance obligations satisfied 5,092 4,948
Changes in the estimated transaction price allocated to performance obligations satisfied in prior periods 2,641 2,460
Performance obligations satisfied from new activities in the period - contract revenue 14,173 42,400
Total revenue $ 21,906 $ 49,808