Expected Acquired Finite-lived Intangible Assets, Weighted Average Useful Life

No definition available.

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- Definition

Expected Payments to Acquire Intangible Assets

+ References

No definition available.

+ Details

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- Definition

Number of Reporting Units

+ References

No definition available.

+ Details

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- Details

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- Definition

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.

+ References

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=26713463&loc=d3e16265-109275

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

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Balance Type:	debit
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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

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-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

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Period Type:	instant

- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph ((a)(1),(b))

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

+ Details

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- Details

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GOODWILL & INTANGIBLE ASSETS - Narrative (Details) (USD $)	12 Months Ended
	Mar. 31, 2015 reporting_unit	Mar. 31, 2014	Mar. 31, 2013
Acquired Finite-Lived Intangible Assets [Line Items]
Number of reporting units	2ntct_NumberofReportingUnits
Goodwill	$ 197,445,000us-gaap_Goodwill	$ 203,446,000us-gaap_Goodwill	$ 202,453,000us-gaap_Goodwill
Intangible assets, net	50,180,000	58,513,000
Payments to acquire intangible assets	174,000	1,086,000	277,000
Weighted average useful life of identifiable intangible assets acquired	10 years 1 month 6 days
Amortization expenses	3,351,000us-gaap_AmortizationOfIntangibleAssets	3,432,000us-gaap_AmortizationOfIntangibleAssets	2,877,000us-gaap_AmortizationOfIntangibleAssets
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Payments to acquire intangible assets		500,000
Weighted average useful life of identifiable intangible assets acquired		6 years 3 months 18 days
Expected payments to acquire intangible assets		300,000
Expected weighted average useful life of identifiable intangible assets acquired		3 years
Indefinite-lived trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Indefinite lived intangible	18,600,000	18,600,000
Acquired software and core technology
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life of identifiable intangible assets acquired	6 years 8 months 12 days
Acquired software and core technology \| Included as cost of product revenue
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization expenses	3,600,000	3,300,000	4,500,000
Other acquired intangible assets \| Included as operating expense
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization expenses	3,500,000	3,600,000	3,100,000
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life of identifiable intangible assets acquired	13 years 3 months 18 days
Unified Service Delivery
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill	195,000,000	201,000,000
Test Optimization
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 2,400,000	$ 2,400,000