FAIR VALUE MEASUREMENTS (Details) (USD $)	12 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Assets [Abstract]
Money market funds	$ 25,004,000us-gaap_MoneyMarketFundsAtCarryingValue	$ 54,267,000us-gaap_MoneyMarketFundsAtCarryingValue
Total Gains (Losses)	0	0
Liabilities [Abstract]
Contingent consideration	1,830,000plus_ContingentConsiderationAtFairValue
Total Gains (Losses)	150,000
Adjustment to fair value of contingent consideration	(150,000)us-gaap_LiabilitiesFairValueAdjustment	355,000us-gaap_LiabilitiesFairValueAdjustment
Payments of contingent consideration		1,300,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets [Abstract]
Money market funds	25,004,000	54,267,000
Liabilities [Abstract]
Contingent consideration	0
Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Money market funds	0	0
Liabilities [Abstract]
Contingent consideration	0
Significant Unobservable Inputs (Level 3) [Member]
Assets [Abstract]
Money market funds	0	0
Liabilities [Abstract]
Contingent consideration	$ 1,830,000

Amount of cash payments that result from the contingent consideration arrangement.

No definition available.

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- Definition

Fair value of potential payments under the contingent consideration arrangement including cash and shares.

+ References

No definition available.

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- Definition

Amount of unrealized (holding) gain (loss) which is included in the statement of income (or changes in net assets) related to those assets still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3).

+ 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 (d)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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Amount of unrealized (holding) gain (loss) which is included in the statement of income (or changes in net assets) related to those liabilities still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3).

+ References

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- Definition

Amount of addition (reduction) to the amount at which a liability could be incurred (settled) in a current transaction between willing parties.

+ References

No definition available.

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- Definition

Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash Equivalents

-URI http://asc.fasb.org/extlink&oid=6507016

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