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MARKETABLE SECURITIES - Schedule Of Maturity Dates (Details) $ in Thousands	Sep. 30, 2018 USD ($)
Investments, Debt and Equity Securities [Abstract]
Due in less than 12 months	$ 16,761
Due in 12 months to two years	7,860
Due in greater than two years	880
Available-for-sale Securities, Debt Maturities, Single Maturity Date	$ 25,501

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- Definition

Available-for-sale Securities, Debt Maturities, Less Than One Year

+ References

No definition available.

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- Definition

Available-for-sale Securities, Debt Maturities, Maturing In More Than Two Years, Fair Value

+ References

No definition available.

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- Definition

Available-for-sale Securities, Debt Maturities, Maturing One Year To Two Years, Fair Value

+ References

No definition available.

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- Definition

Fair value of investment in available-for-sale debt securities with a single maturity date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 320
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=75019621&loc=d3e62586-112803

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563

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