Description of Business and Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2016
Accounting Policies [Abstract]  
Schedule of Activity in the Allowance for Doubtful Accounts
The activity in the allowance for for doubtful accounts is as follows (amounts in thousands):
Year Ended December 31,

Beginning Balance
 
Additions
Charged to
Costs and
Expenses
 
Deductions /
Write-Offs
 
Ending Balance
2014
$
1,165

 
$
1,337

 
$
(1,227
)
 
$
1,275

2015
$
1,275

 
$
2,361

 
$
(2,452
)
 
$
1,184

2016
$
1,184

 
$
1,831

 
$
(1,283
)
 
$
1,732