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Accounts Receivable (Tables)
9 Months Ended
Sep. 30, 2017
Receivables [Abstract]  
Summary of Accounts Receivable

 

(Table only in thousands)

 

September 30,

2017

 

 

December 31,

2016

 

Trade receivables

 

$

13,211

 

 

$

11,976

 

Contract receivables

 

 

60,176

 

 

 

72,835

 

Allowance for doubtful accounts

 

 

(2,883

)

 

 

(1,749

)

 

 

$

70,504

 

 

$

83,062