Accounts Receivable

9 Months Ended

Sep. 30, 2011

Accounts Receivable [Abstract]

Accounts Receivable

4. Accounts Receivable

Accounts receivable consists of the following as of (in thousands):

	September 30,			December 31,
	2011			2010
Trade accounts receivable	$	78,190		$	103,800
Unbilled trade accounts receivable		12,321			21,948
Lease receivables, net of deferred interest income of $160 and $236 at September 30, 2011 and December 31, 2010, respectively		7,710			2,478
Finance receivables, net of deferred interest income of $416 and $691 at September 30, 2011 and December 31, 2010, respectively		2,561			23,351
Vendor and other receivables		2,767			4,027
Total accounts receivable	$	103,549		$	155,604
Less: Allowance for doubtful accounts		(17	)		(98	)
Sales return allowance		(1,531	)		(615	)
Accounts receivable, net	$	102,001		$	154,891