Schedule II Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2013

Schedule II – Valuation and Qualifying Accounts

Years Ended December 31, 2011, 2012, and 2013 (in thousands):



Allowance for doubtful accounts and billing adjustments ⁽¹⁾	Balance at Beginning of Year		Charged to Expense		Charged to Other Accounts ⁽²⁾		Write-offs, Net of Recoveries		Balance at End of Year
Year ended December 31, 2011	$	2,415	$	1,525	$	—	$	1,416	$	2,524
Year ended December 31, 2012	$	2,524	$	1,456	$	475	$	1,520	$	2,935
Year ended December 31, 2013	$	2,935	$	2,317	$	—	$	1,855	$	3,397


⁽¹⁾	Additions to the allowance for doubtful accounts are charged to bad debt expense.


⁽²⁾	Amounts represent opening balances from acquired businesses.