XML 34 R22.htm IDEA: XBRL DOCUMENT

Concentration of Credit Risk (Tables)

12 Months Ended

Dec. 31, 2012

An analysis of the changes in the allowance for doubtful accounts is presented as follows (in thousands):

	2012			2011			2010
Balance, beginning of year	$	357		$	180		$	347
Provisions for bad debts		-			276			28
Less: Write-offs and recoveries		(151	)		(99	)		(195	)
Balance, end of year	$	206		$	357		$	180