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Revenue Recognition (Tables)
9 Months Ended
Sep. 30, 2017
Revenue Recognition  
Schedule of activity of accounts receivable allowance

 

        A rollforward of the accounts receivable allowance is as follows (in thousands):

                                                                                                                                                                                    

 

 

Fiscal Year-to-Date
Period Ended

 

Fiscal Year
Ended

 

 

 

September 30,
2017

 

December 31,
2016

 

Balance at beginning of period

 

$

4,253

 

$

3,648

 

Increases to reserve

 

 

6,076

 

 

2,761

 

Amounts written off

 

 

(2,852

)

 

(2,156

)

Effects of foreign currency translation

 

 

9

 

 

 

​  

​  

​  

​  

Balance at end of period

 

$

7,486

 

$

4,253

 

​  

​  

​  

​  

​  

​  

​  

​  

 

Schedule of activity of unbilled receivables allowance

 

        A rollforward of the unbilled receivables allowance is as follows (in thousands):

                                                                                                                                                                                    

 

 

Fiscal Year-to-Date
Period Ended

 

Fiscal Year
Ended

 

 

 

September 30,
2017

 

December 31,
2016

 

Balance at beginning of period

 

$

1,720

 

$

2,354

 

Increases to reserves

 

 

1,727

 

 

2,102

 

Amounts written off

 

 

(914

)

 

(2,736

)

Effects of foreign currency translation

 

 

(2

)

 

 

​  

​  

​  

​  

Balance at end of period

 

$

2,531

 

$

1,720

 

​  

​  

​  

​  

​  

​  

​  

​  

 

Schedule of reimbursable expenses included in revenues

 

Reimbursable expenses are as follows (in thousands):

                                                                                                                                                                                    

 

 

Quarter Ended

 

Fiscal Year-to-Date
Period Ended

 

 

 

September 30,
2017

 

October 1,
2016

 

September 30,
2017

 

October 1,
2016

 

Reimbursable expenses

 

$

9,675

 

$

8,969

 

$

29,463

 

$

25,510