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Capitalized Software Development Costs
9 Months Ended
Dec. 31, 2011
Capitalized Software Development Costs [Abstract]  
Capitalized Software Development Costs
10. Capitalized Software Development Costs

Net capitalized software development costs for NetScout's nGenius Service Delivery Manager product totaled $102 thousand and $255 thousand at December 31, 2011 and March 31, 2011, respectively. This product was released on June 29, 2010, and is being amortized on a straight-line basis over two years. Amortization included as cost of product revenue related to this product was $51 thousand, $153 thousand, $51 thousand and $102 thousand for the three and nine months ended December 31, 2011 and 2010, respectively.