Changes in our current and non-current receivables allowance for the quarters and years to date ended June 30, 2013 and 2012 were as follows (dollars in thousands):


	Balance, Beginning of Period		Charges to Expense ⁽¹⁾		Amounts Written-off			Balance, End of Period
For the quarter ended June 30, 2013	$	41,783	$	7,337	$	(8,130	)	$	40,990

For the quarter ended June 30, 2012	$	58,457	$	8,121	$	(13,801	)	$	52,777

For the year to date ended June 30, 2013	$	47,093	$	13,995	$	(20,098	)	$	40,990

For the year to date ended June 30, 2012	$	63,317	$	17,017	$	(27,557	)	$	52,777

(1)	Charges to expense include an offset for recoveries of amounts previously written off of $2.2 million for both of the quarters ended June 30, 2013 and 2012 and $4.9 million and $5.0 million for the years to date ended June 30, 2013 and 2012, respectively.