Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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+ References

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472

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- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

+ References

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Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, from an acquisition.

+ References

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BUSINESS COMBINATIONS (Details 1) - USD ($) $ in Thousands	3 Months Ended
BUSINESS COMBINATIONS (Details 1) - USD ($) $ in Thousands	Apr. 30, 2016	Jan. 30, 2016
Business Acquisition [Line Items]
Business combination total		$ 20,236
Trade Name [Member]
Business Acquisition [Line Items]
Indefinite-lived intangible assets acquired	$ 7,300
Customer Prescription Files [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 9,476
Customer Prescription Files [Member] \| Minimum [Member]
Business Acquisition [Line Items]
Estimated Useful Lives (years)	4 years
Customer Prescription Files [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Estimated Useful Lives (years)	7 years
Referral and Relationships [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 1,400
Estimated Useful Lives (years)	2 years
Non-Compete Agreements [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 1,800
Estimated Useful Lives (years)	8 years
Business Licenses [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 260
Estimated Useful Lives (years)	1 year