Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2011

Valuation and Qualifying Accounts

Valuation and Qualifying Accounts

27. 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,
	2011			2010			2009
Allowance for Doubtful Accounts
Balance at beginning of period	$	162		$	162		$	175
Charged to costs and expenses		—			134			12
Other charges(1)		(2	)		(134	)		(25	)
Balance at end of period	$	160		$	162		$	162
Deferred Tax Asset Valuation Allowance
Balance at beginning of period	$	1,036		$	1,688		$	30
Charged to costs and expenses		(59	)		(652	)		1,667
Other charges		—			—			(9	)
Balance at end of period	$	977		$	1,036		$	1,688

(1)

Bad debts written-off (net of recoveries).