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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2016
Accounting Policies [Abstract]  
Schedule of allowance for doubtful accounts
Transactions affecting the allowance for doubtful accounts are as follows (in thousands):

 
 
For The Years Ended
 
 
2016
 
2015
Balance at beginning of year
 
$
5,872

 
$
4,632

Charged to expense
 
1,415

 
2,567

Write-offs, recoveries and other, net
 
(5,152
)
 
(1,327
)
Balance at end of year
 
$
2,135

 
$
5,872