TRADE ACCOUNTS RECEIVABLE, NET OF ALLOWANCE (Tables)

3 Months Ended

Mar. 31, 2017

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, 2017			December 31, 2016
Trade accounts receivable	$	230,213		$	234,473
Unbilled trade accounts receivable		37,877			34,681
Total accounts receivable		268,090			269,154
Allowance for sales credit memos		(4,780	)		(4,126	)
	$	263,310		$	265,028