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Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Sep. 30, 2016
Stockholders Equity Note [Abstract] |
Accumulated Other Comprehensive Income (Loss) | Accumulated other comprehensive income (loss) consisted of the following (in thousands):
|  | Unrealized Gains (Losses) on Available-for-Sale Securities |  |  | Foreign Currency Translation Adjustments |  |  | Total |
Balance at October 1, 2013 |  | $ | — |  |  | $ | (1,064 | ) |  | $ | (1,064 | )
Other comprehensive loss |  |  | (26 | ) |  |  | (1,406 | ) |  |  | (1,432 | )
Balance at September 30, 2014 |  |  | (26 | ) |  |  | (2,470 | ) |  |  | (2,496 | )
Other comprehensive income (loss) |  |  | 23 |  |  |  | (10,472 | ) |  |  | (10,449 | )
Balance at September 30, 2015 |  |  | (3 | ) |  |  | (12,942 | ) |  |  | (12,945 | )
Other comprehensive loss |  |  | (12 | ) |  |  | (2,984 | ) |  |  | (2,996 | )
Balance at September 30, 2016 |  | $ | (15 | ) |  | $ | (15,926 | ) |  | $ | (15,941 | )

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