XML 41 R27.htm IDEA: XBRL DOCUMENT v3.8.0.1
Accounts Receivable (Tables)
12 Months Ended
Dec. 31, 2017
Receivables [Abstract]  
Schedule of Accounts Receivable

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

 

 

 

December 31,

 

 

 

2017

 

 

2016

 

Billed and billable

 

$

169,554

 

 

$

188,038

 

Less: unpaid deferred revenue

 

 

(95,864

)

 

 

(101,538

)

Accounts receivable, gross

 

 

73,690

 

 

 

86,500

 

Less: allowance for doubtful accounts

 

 

(4,190

)

 

 

(3,181

)

Accounts receivable, net

 

$

69,500

 

 

$

83,319