Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Table)

12 Months Ended

Dec. 31, 2014

Accounting Policies

Accounts receivable, allowance for doubtful accounts

The changes in the allowance for doubtful accounts during the years ended December 31, 2014, 2013 and 2012 were as follows:
		2014		2013		2012
(Dollars in thousands)
Beginning balance		$	60,238	$	26,902	$	23,537
	Additions, net of recoveries		101,282		98,864		67,372
	Deductions		(116,942)		(65,528)		(64,007)
Ending balance (1)		$	44,578	$	60,238	$	26,902
(1)	In 2014, this balance includes a $6.1 million allowance related to the long-term portion of unbilled equipment installment receivables.