Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2012

Valuation and Qualifying Accounts

Valuation and Qualifying Accounts

26. Valuation and Qualifying Accounts

        Activity in the Partnership's allowance for doubtful accounts and deferred tax asset valuation allowance is as follows (in thousands):

	Year ended December 31,
	2012			2011			2010
Allowance for Doubtful Accounts
Balance at beginning of period	$	160		$	162		$	162
Charged to costs and expenses		—			—			134
Other charges(1)		(1	)		(2	)		(134	)
Balance at end of period	$	159		$	160		$	162
Deferred Tax Asset Valuation Allowance
Balance at beginning of period	$	977		$	1,036		$	1,688
Charged to costs and expenses		(73	)		(59	)		(652	)
Balance at end of period	$	904		$	977		$	1,036

(1)

Bad debts written-off (net of recoveries).