Allowance for Credit Losses (Tables)

9 Months Ended

Sep. 30, 2013

Financing Receivable, Allowance for Credit Losses [Line Items]

Allowance for credit losses

The following table summarizes the Company’s allowance for credit losses for the nine months endedSeptember 30, 2013 and 2012:

	Finance Leases			Notes Receivable			Total
Allowance for credit losses
Balance at January 1, 2013	$	525		$	2,047		$	2,572
Provision for credit losses	8			—			8
Recoveries	3			—			3
Write-offs	(90		)	(2,047		)	(2,137		)
Balance at September 30, 2013	$	446		$	—		$	446
Balance at January 1, 2012	$	210		$	2,047		$	2,257
Provision for credit losses	261			—			261
Recoveries	48			—			48
Write-offs	—			—			—
Balance at September 30, 2012	$	519		$	2,047		$	2,566

Aging of past-due notes receivable

The following table summarizes the Company’s aging of past-due notes receivable balances:

	September 30, 2013		December 31, 2012
30-59 days past due	$	—	$	—
60-89 days past due	—		—
> 89 days past due	—		1,840
Total past due	$	—	$	1,840