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Accounts Receivable
9 Months Ended
Sep. 30, 2019
Receivables [Abstract]  
Accounts Receivable

3.

Accounts Receivable

 

(table only in thousands)

 

September 30, 2019

 

 

December 31, 2018

 

Contract receivables

 

$

49,925

 

 

$

48,826

 

Trade receivables

 

 

10,877

 

 

 

7,296

 

Allowance for doubtful accounts

 

 

(2,711

)

 

 

(2,897

)

Total accounts receivable

 

$

58,091

 

 

$

53,225

 

 

Balances billed but not paid by customers under retainage provisions in contracts within the Condensed Consolidated Balance Sheets amounted to approximately $1.4 million and $0.9 million at September 30, 2019 and December 31, 2018, respectively. Retainage receivables on contracts in progress are generally collected within a year after contract completion.

 

Bad debt expense was $0.3 million and $0.6 million for the three-month periods ended September 30, 2019 and 2018, respectively, and $0.7 million and $1.2 million for the nine-month periods ended September 30, 2019 and 2018, respectively.