Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Allowance for Credit Losses on Financing Receivables

The following is activity in the Company's allowance for doubtful accounts receivable for the years ended December 31, 2014, 2013 and 2012 (in thousands):

	Years Ended December 31,
	2014			2013			2012
Balance, beginning of period	$	13,142		$	18,863		$	11,497
Provision charged to expense	9,218			9,806			7,506
Provision charged to other accounts (a)	(43		)	(163		)	(341		)
Amounts written off, net of recoveries (b)	(12,423		)	(15,364		)	211
Assets held for sale adjustment	—			—			(10		)
Balance, end of period	$	9,894		$	13,142		$	18,863

(a) Provision charged to other accounts includes accruals charged to accounts payable for anticipated uncollectible charges on purchase of accounts receivable from others which were billed by the Company.

(b) Net recoveries for the year ended December 31, 2012 are primarily due to settlements with wholesale carriers for accounts receivable previously reserved as uncollectible.