TRADE ACCOUNTS RECEIVABLE, NET OF ALLOWANCE (Tables)

3 Months Ended

Mar. 31, 2016

Schedule of Trade Accounts Receivable

Unbilled trade accounts receivable primarily relate to services earned under time and materials arrangements and to license, maintenance, and cloud arrangements that have commenced or been delivered in excess of scheduled invoicing.

(in thousands)	March 31, 2016			December 31, 2015
Trade accounts receivable	$	189,022		$	190,820
Unbilled trade accounts receivable		18,405			25,657
Total accounts receivable		207,427			216,477
Allowance for sales credit memos		(5,028	)		(4,631	)
	$	202,399		$	211,846