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Accounts Receivable
3 Months Ended
Mar. 31, 2018
Receivables [Abstract]  
Accounts Receivable
Accounts Receivable

Accounts receivable and the related allowance for doubtful accounts are as follows:
 
 
March 31,
2018
 
December 31, 2017
 
(in thousands)
Accounts receivable
$
54,427

 
$
50,457

Less:  Allowance for doubtful accounts
(108
)
 
(119
)
Total, net
$
54,319

 
$
50,338


 
 
Three months ended
 
March 31,
2018
 
March 31,
2017
Allowance for doubtful accounts:
(in thousands)
Balance, beginning of period
$
119

 
$
90

Provisions for losses on accounts receivables, net of recoveries
(11
)
 
184

Balance, end of period
$
108

 
$
274