ACCOUNTS RECEIVABLE AND SIGNIFICANT CLIENTS

12 Months Ended

Dec. 31, 2017

ACCOUNTS RECEIVABLE AND SIGNIFICANT CLIENTS [Abstract]

ACCOUNTS RECEIVABLE AND SIGNIFICANT CLIENTS

(4)ACCOUNTS RECEIVABLE AND SIGNIFICANT CLIENTS

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

	December 31,
	2017		2016
Accounts receivable	$	386,672	$	301,470
Less: Allowance for doubtful accounts		(921)		(662)
Accounts receivable, net	$	385,751	$	300,808

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

	December 31,
	2017		2016		2015
Balance, beginning of year	$	662	$	2,176	$	3,425
Provision for doubtful accounts		458		1,164		1,465
Uncollectible receivables written-off		(180)		(2,670)		(2,035)
Effect of foreign currency and other		(19)		(8)		(679)
Balance, end of year	$	921	$	662	$	2,176

Significant Clients

The Company had no clients that contributed in excess of 10% of total revenue for the year ended December 31, 2017. The Company had one client that contributed 10% of total revenue in the years ended December 31, 2016 and 2015. This client operates in the communications industry and is included in the CMS segment. The revenue from this client as a percentage of total revenue was as follows:

	Year Ended December 31,
	2017		2016		2015
Telecommunications client	9	%	10	%	10	%

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

	Year Ended December 31,
	2017		2016		2015
Telecommunications client	$	26,920	$	28,080	$	23,953

The loss of one or more of its significant clients could have a material adverse effect on the Company’s business, operating results, or financial condition. The Company does not require collateral from its clients. To limit the Company’s credit risk with its clients, management performs periodic credit evaluations, maintains allowances for uncollectible accounts and may require pre-payment for services from certain clients.  Based on currently available information, management does not believe significant credit risk exists as of December 31, 2017.