Description of Business and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Schedule of Activity in the Allowance for Doubtful Accounts

The activity in the allowance 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
2016	$	1,184	$	1,831	$	(1,283	)	$	1,732
2017	$	1,732	$	1,895	$	(2,309	)	$	1,318
2018	$	1,318	$	1,814	$	(856	)	$	2,276