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INTANGIBLE ASSETS - Note 4
6 Months Ended
Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
INTANGIBLE ASSETS - Note 4

4. INTANGIBLE ASSETS

The carrying value of intangible assets consisted of the following (in thousands):

      September 30, 2018     March 31, 2018
      Gross           Net     Gross           Net
      Carrying     Accumulated     Carrying     Carrying     Accumulated     Carrying
      Amount     Amortization     Amount     Amount     Amortization     Amount
Technology   $ 22,902    $ (12,755)   $ 10,147    $ 19,702    $ (10,535)   $ 9,167 
Customer relationships     9,464      (7,639)     1,825      9,776      (7,366)     2,410 
Trade names/domains     2,108      (1,918)     190      2,108      (1,727)     381 
In-process research and development     95      (95)         95      (95)    
     Total acquired identifiable intangible assets   $ 34,569    $ (22,407)   $ 12,162    $ 31,681    $ (19,723)   $ 11,958 

At September 30, 2018, annual amortization of intangible assets, based upon our existing intangible assets and current useful lives, is estimated to be the following (in thousands):

      Amount
Remaining 2019   $ 2,699 
2020     4,716 
2021     2,753 
2022     1,766 
2023     228 
Total   $ 12,162