Amount of accounts receivable balance from revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues.

No definition available.

+ Details

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
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-Publisher FASB
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SIGNIFICANT CLIENTS(NARRATIVE) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Entity Wide Revenue Major Customer Line Items
Revenue.	$ 461,326	$ 395,507	$ 392,515	$ 394,356	$ 419,133	$ 364,936	$ 349,853	$ 375,249	$ 1,643,704	$ 1,509,171	$ 1,477,365
Sears
Entity Wide Revenue Major Customer Line Items
Accounts receivable amount from major customer	2,700				2,700				$ 2,700	$ 2,700
Customer Concentration Risk
Entity Wide Revenue Major Customer Line Items
Concentration risk percentage									10.00%
Customer Concentration Risk \| Revenue \| Healthcare client
Entity Wide Revenue Major Customer Line Items
Concentration risk percentage									8.00%	10.00%	7.00%
Credit Concentration Risk \| Accounts Receivable \| Healthcare client
Entity Wide Revenue Major Customer Line Items
Accounts receivable amount from major customer	$ 18,385				$ 49,245				$ 18,385	$ 49,245	$ 56,802
Minimum \| Customer Concentration Risk
Entity Wide Revenue Major Customer Line Items
Revenue.									$ 100,000