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.

No definition available.

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- Definition

Amount of gain (loss) recognized on the income statement for financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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- Definition

Amount of settlements of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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- Definition

Fair value, as of the balance sheet date, of potential payments under the contingent consideration arrangement including cash and shares.

+ References

No definition available.

+ Details

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BUSINESS COMBINATIONS BUSINESS COMBINATIONS - OTHER BUSINESS COMBINATION INFORMATION (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Business Acquisition
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings	$ 8,300	$ (7,300)	$ 900
Payments of contingent consideration	(9,400)	(3,300)	$ (7,400)
Recurring \| Level 3
Business Acquisition
Business Acquisition Contingent Consideration Fair Value Disclosure	62,829	$ 52,733
Accrued expenses and other current liabilities \| Recurring \| Level 3
Business Acquisition
Business Acquisition Contingent Consideration Fair Value Disclosure	13,700
Other liabilities \| Recurring \| Level 3
Business Acquisition
Business Acquisition Contingent Consideration Fair Value Disclosure	$ 49,100