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Accumulated Other Comprehensive Income (Loss) (Tables) | 6 Months Ended
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Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Abstract] |
Accumulated other comprehensive income (loss) | The following summarizes changes in accumulated other comprehensive income (loss):
|  | Three Months Ended September 30, 2017 |  |  | Three Months Ended September 30, 2016 |
|  | Unrealized Gain on Short-Term Investments |  |  | Foreign Currency Translation |  |  | Total |  |  | Unrealized Gain (Loss) on Short-Term Investments |  |  | Foreign Currency Translation |  |  | Total |
Balance at beginning of period |  | $ | 584,000 |  |  | $ | (7,740,000 | ) |  | $ | (7,156,000 | ) |  | $ | 354,000 |  |  | $ | (5,719,000 | ) |  | $ | (5,365,000 | )
Other comprehensive income (loss), net of tax |  |  | 60,000 |  |  |  | 608,000 |  |  |  | 668,000 |  |  |  | 66,000 |  |  |  | (807,000 | ) |  |  | (741,000 | )
Amounts reclassified from accumulated other comprehensive loss, net of tax |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Balance at end of period |  | $ | 644,000 |  |  | $ | (7,132,000 | ) |  | $ | (6,488,000 | ) |  | $ | 420,000 |  |  | $ | (6,526,000 | ) |  | $ | (6,106,000 | )
|  | Six Months Ended September 30, 2017 |  |  | Six Months Ended September 30, 2016 |
|  | Unrealized Gain on Short-Term Investments |  |  | Foreign Currency Translation |  |  | Total |  |  | Unrealized Gain (Loss) on Short-Term Investments |  |  | Foreign Currency Translation |  |  | Total |
Balance at beginning of period |  | $ | 528,000 |  |  | $ | (7,969,000 | ) |  | $ | (7,441,000 | ) |  | $ | 332,000 |  |  | $ | (5,184,000 | ) |  | $ | (4,852,000 | )
Other comprehensive income (loss), net of tax |  |  | 116,000 |  |  |  | 837,000 |  |  |  | 953,000 |  |  |  | 88,000 |  |  |  | (1,342,000 | ) |  |  | (1,254,000 | )
Amounts reclassified from accumulated other comprehensive loss, net of tax |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Balance at end of period |  | $ | 644,000 |  |  | $ | (7,132,000 | ) |  | $ | (6,488,000 | ) |  | $ | 420,000 |  |  | $ | (6,526,000 | ) |  | $ | (6,106,000 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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