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Contract Balances (Tables)
9 Months Ended
Sep. 30, 2019
Contract With Customer Asset And Liability [Abstract]  
Schedule of Accounts Receivable

Accounts receivable (in thousands) consisted of the following, as of:

 

 

 

September 30,

 

 

December 31,

 

 

 

2019

 

 

2018

 

Billed and billable

 

$

121,336

 

 

$

176,848

 

Less: allowance for doubtful accounts

 

 

(3,334

)

 

 

(5,489

)

Accounts receivable, net

 

$

118,002

 

 

$

171,359

 

Deferred Revenue and Advance Payments

Deferred revenue and advance payments (in thousands) from customers consisted of the following, as of:

 

 

 

September 30,

 

 

December 31,

 

 

 

2019

 

 

2018

 

Current:

 

 

 

 

 

 

 

 

Deferred product licenses revenue

 

$

470

 

 

$

1,768

 

Deferred subscription services revenue

 

 

12,812

 

 

 

13,508

 

Deferred product support revenue

 

 

139,402

 

 

 

152,501

 

Deferred other services revenue

 

 

7,560

 

 

 

8,763

 

Total current deferred revenue and advance payments

 

$

160,244

 

 

$

176,540

 

 

 

 

 

 

 

 

 

 

Non-current:

 

 

 

 

 

 

 

 

Deferred product licenses revenue

 

$

368

 

 

$

542

 

Deferred subscription services revenue

 

 

142

 

 

 

2,384

 

Deferred product support revenue

 

 

3,440

 

 

 

3,091

 

Deferred other services revenue

 

 

537

 

 

 

452

 

Total non-current deferred revenue and advance payments

 

$

4,487

 

 

$

6,469