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Accounts Receivable
 12 Months Ended
Dec. 31, 2018
Receivables [Abstract]  
Accounts Receivable

3.Accounts Receivable

 

Accounts receivable consisted of the following:

 

 

December 31,

 

(Table only in thousands)

 

2018

 

 

2017

 

Trade receivables

 

$

7,296

 

 

$

11,603

 

Contract receivables

 

 

48,826

 

 

 

60,543

 

Allowance for doubtful accounts

 

 

(2,897

)

 

 

(4,156

)

Total accounts receivable

 

$

53,225

 

 

$

67,990

 

 

 

Balances billed, but not paid by customers under retainage provisions in contracts that are recorded in deferred charges and other assets within the Consolidated Balance Sheets, amounted to approximately $0.9 million and $2.5 million at December 31, 2018 and 2017, respectively. Retainage receivables on contracts in progress are generally collected within a year or two subsequent to contract completion.

Provision for doubtful accounts was $1.4 million, $3.9 million and $0.8 million during 2018, 2017 and 2016, respectively, while accounts charged to the allowance were $0.8 million, $1.5 million and $0.3 million during 2018, 2017 and 2016, respectively.

In 2018, the divestitures impacted contract receivables by $22.2 million as well as $1.2 million on the allowance for doubtful accounts.