XML 113 R63.htm IDEA: XBRL DOCUMENT

Receivables Rollforward of Allowance for Doubtful Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Allowance for Doubtful Accounts [Roll Forward]
Balance as of January 1	$ 4,273
Current period provision	5,179	11,460	16,979
Balance as of December 31	3,823	4,273
Installment Receivables [Member]
Allowance for Doubtful Accounts [Roll Forward]
Balance as of January 1	4,273	4,841
Current period provision	458	1,215
Direct write-offs charged against the allowance	(908)	(1,783)
Balance as of December 31	$ 3,823	$ 4,273

Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

+ References+ Details