Concentration of Credit Risk (Tables)

12 Months Ended

Dec. 31, 2013

Concentration of Credit Risk [Abstract]

Changes in the allowance for doubtful accounts

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

	2013			2012			2011
Balance, beginning of year	$	206		$	357		$	180
Provisions for bad debts		147			-			276
Less:  Write-offs and recoveries		(101	)		(151	)		(99	)
Balance, end of year	$	252		$	206		$	357