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Note 9 - Receivables, Net
3 Months Ended
Mar. 31, 2020
Notes to Financial Statements  
Financing Receivables [Text Block]

9.  Receivables, net 

Receivables include billed and unbilled amounts for services provided to clients for which we have an unconditional right to payment as of the end of the applicable period and do not bear interest. The following table presents major categories of receivables (in thousands):

          

As Restated

 

 

 

March 31, 2020

  

December 31, 2019

  

March 31, 2019

 

Contracts completed and in progress:

            

Billed

 $250,683  $299,633  $200,092 

Unbilled

  141,514   149,696   112,892 

Total contracts completed and in progress

  392,197   449,329   312,984 

Material sales

  34,268   42,936   29,948 

Other

  52,645   55,526   38,380 

Total gross receivables

  479,110   547,791   381,312 

Less: allowance for credit losses

  1,392   374   327 

Total net receivables

 $477,718  $547,417  $380,985 

Included in other receivables at  March 31, 2020, December 31, 2019 and  March 31, 2019, were items such as estimated recovery from back charge claims, notes receivable, fuel tax refunds and income tax refunds. No such receivables individually exceeded 10% of total net receivables at any of these dates.