ACCOUNTS RECEIVABLE AND SIGNIFICANT CLIENTS (TABLES)

12 Months Ended

Dec. 31, 2016

ACCOUNTS RECEIVABLE AND SIGNIFICANT CLIENTS [Abstract]

Schedule of Accounts Receivable

Accounts receivable, net in the accompanying Consolidated Balance Sheets consists of the following (in thousands):

	December 31,
	2016		2015
Accounts receivable	$	301,470	$	285,650
Less: Allowance for doubtful accounts		(662)		(2,176)
Accounts receivable, net	$	300,808	$	283,474

Schedule of Change in Allowance for Doubtful Accounts

Activity in the Company’s Allowance for doubtful accounts consists of the following (in thousands):

	December 31,
	2016		2015		2014
Balance, beginning of year	$	2,176	$	3,425	$	3,815
Provision for doubtful accounts		1,164		1,465		633
Uncollectible receivables written-off		(2,670)		(2,035)		(681)
Effect of foreign currency and other		(8)		(679)		(342)
Balance, end of year	$	662	$	2,176	$	3,425

Schedule of Revenue from Significant Clients

	Year Ended December 31,
	2016		2015		2014
Telecommunications client	10	%	10	%	11	%

Schedule of Accounts Receivable Outstanding from Significant Clients

Accounts receivable from this client was as follows (in thousands):

	Year Ended December 31,
	2016		2015		2014
Telecommunications client	$	28,080	$	23,953	$	38,400