Receivables Narrative (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Doubtful Accounts Receivable	$ 17,715,000	$ 22,213,000
Number of Missed Payments before Delinquent	3
Typical Financing Period	0 years 12 months 0 days
Credit amount requiring additional analysis	250,000
Average Period of Adjudication	0 years 18 months 0 days
Installment receivable purchased from DLL	$ 5,899,000	$ 2,609,000