Allowance for Uncollectible Accounts (Tables)

6 Months Ended

Jun. 30, 2015

Valuation and Qualifying Accounts [Abstract]

Allowance for Uncollectible Accounts

The following table summarizes the activity in the allowance for uncollectible accounts for the six months ended June 30, 2015 (amounts in thousands):

Balance as of December 31, 2014	$	18,582
Additions	10,064
Deductions	(4,746		)
Balance as of June 30, 2015	$	23,900