Annual report pursuant to Section 13 and 15(d)

Receivables and Unbilled Receivables

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Receivables and Unbilled Receivables
12 Months Ended
Dec. 31, 2018
Receivables [Abstract]  
Receivables and Unbilled Receivables
Receivables and Unbilled Receivables

Receivables, net and unbilled receivables, net as of December 31, 2018 and 2017, respectively, were as follows (in thousands):
 
2018
 
2017
Receivables, net
$
60,004

 
$
55,760

Unbilled receivables, net
41,255

 
42,577


$
101,259

 
$
98,337



Receivables, net are recorded at face value less an allowance for doubtful accounts of approximately $79 thousand and $83 thousand as of December 31, 2018 and 2017, respectively.

The unbilled receivables balance includes certain costs for work performed at risk but which we believe will be funded by the government totaling approximately $4.7 million and $4.0 million as of December 31, 2018 and 2017, respectively. We expect to invoice substantially all unbilled receivables during 2019.