TRADE ACCOUNTS RECEIVABLE, NET OF ALLOWANCES (Tables)

6 Months Ended

Jun. 30, 2012

Schedule Of Unbilled Trade Accounts Receivable

(in thousands)	June 30, 2012			December 31, 2011
Trade accounts receivable	$	67,635		$	77,123
Unbilled trade accounts receivable		26,072			22,096
Total accounts receivable		93,707			99,219
Allowance for doubtful accounts		—			(31	)
Allowance for sales credit memos		(1,165	)		(895	)
Total allowance		(1,165	)		(926	)
	$	92,542		$	98,293