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Goodwill and Intangible Assets, Goodwill (Details) - USD ($)
6 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Goodwill [Roll Forward]    
Balance at beginning of period $ 2,551,000 $ 2,053,000
Goodwill acquired 0 423,000
Translation adjustment 0 0
Impairment 0 0
Balance at end of period $ 2,551,000 $ 2,476,000