Segment margin represents segment revenues less the related cost of sales, direct sales and marketing expenses attributed to the segment.

No definition available.

+ Details

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- Definition

Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 3

-Subparagraph a, b

-Article 5

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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://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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Business Segment Information - Financial Information by Reportable Segment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Revenue	$ 330,700us-gaap_SalesRevenueNet	$ 328,524us-gaap_SalesRevenueNet
Contribution margin	139,738	139,294
Gross accounts receivable	214,707us-gaap_AccountsReceivableGrossCurrent		214,664us-gaap_AccountsReceivableGrossCurrent
Revenue \| Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	100.00%	100.00%
Contribution Margin \| Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	42.00%	42.00%
Accounts Receivable \| Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	100.00%		100.00%
Americas
Segment Reporting Information [Line Items]
Revenue	157,354	163,070
Contribution margin	60,850	69,973
Gross accounts receivable	99,475		88,316
Americas \| Revenue \| Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	48.00%	50.00%
Americas \| Contribution Margin \| Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	39.00%	43.00%
Americas \| Accounts Receivable \| Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	46.00%		41.00%
EMEA
Segment Reporting Information [Line Items]
Revenue	93,849	89,036
Contribution margin	42,776	37,666
Gross accounts receivable	59,717		62,540
EMEA \| Revenue \| Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	28.00%	27.00%
EMEA \| Contribution Margin \| Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	46.00%	42.00%
EMEA \| Accounts Receivable \| Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	28.00%		29.00%
APAC
Segment Reporting Information [Line Items]
Revenue	79,497	76,418
Contribution margin	36,112	31,655
Gross accounts receivable	$ 55,515		63,808
APAC \| Revenue \| Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	24.00%	23.00%
APAC \| Contribution Margin \| Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	45.00%	41.00%
APAC \| Accounts Receivable \| Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	26.00%		30.00%