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v3.19.3.a.u2

Summary of Significant Accounting Policies - Advertising Costs and AOCI (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017
Advertising Costs |  |  |
Advertising costs | $ 2,700 | $ 3,600 | $ 5,200
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Balance | 129,654 | 132,636 | 162,611
Current-period other comprehensive (loss) income | (1,524) | (18) | 2,140
Balance | 116,175 | 129,654 | 132,636
Foreign Currency Translation Adjustments |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Balance | (7,585) | (6,794) | (7,345)
Current-period other comprehensive (loss) income | (984) | (791) | 551
Balance | (8,569) | (7,585) | (6,794)
Net Change Pension and Other Postretirement Benefit Plans |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Balance | 1,136 | 363 | (1,226)
Current-period other comprehensive (loss) income | (540) | 773 | 1,589
Balance | 596 | 1,136 | 363
Accumulated Other Comprehensive Loss |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Balance | (6,449) | (6,431) | (8,571)
Balance | $ (7,973) | $ (6,449) | $ (6,431)

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