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Changes in Accumulated Other Comprehensive Loss (Tables) | 6 Months Ended
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Sep. 30, 2021
Equity [Abstract] |
Changes in Accumulated Other Comprehensive Loss by Component | The changes in accumulated other comprehensive loss by component for the six months ended September 30, 2021 and 2020 are as follows:
|  | Pension and Other Postretirement Benefit Items |  |  | Foreign Currency Items |  |  | Total |
Balance at April 1, 2021 |  | $ | (7,698 | ) |  | $ | 301 |  |  | $ | (7,397 | )
Other comprehensive income before reclassifications |  |  | 68 |  |  |  | 93 |  |  |  | 161 |
Amounts reclassified from accumulated other comprehensive loss |  |  | 353 |  |  |  | — |  |  |  | 353 |
Net current-period other comprehensive income |  |  | 421 |  |  |  | 93 |  |  |  | 514 |
Balance at September 30, 2021 |  | $ | (7,277 | ) |  | $ | 394 |  |  | $ | (6,883 | )
|  | Pension and Other Postretirement Benefit Items |  |  | Foreign Currency Items |  |  | Total |
Balance at April 1, 2020 |  | $ | (9,472 | ) |  | $ | (84 | ) |  | $ | (9,556 | )
Other comprehensive loss before reclassifications |  |  | — |  |  |  | 155 |  |  |  | 155 |
Amounts reclassified from accumulated other comprehensive loss |  |  | 409 |  |  |  | — |  |  |  | 409 |
Net current-period other comprehensive income (loss) |  |  | 409 |  |  |  | 155 |  |  |  | 564 |
Balance at September 30, 2020 |  | $ | (9,063 | ) |  | $ | 71 |  |  | $ | (8,992 | )
Reclassifications Out of Accumulated Other Comprehensive Loss by Component | The reclassifications out of accumulated other comprehensive loss by component for the three and six months ended September 30, 2021 and 2020 are as follows:
Details about Accumulated Other Comprehensive Loss Components |  | Amount Reclassified from Accumulated Other Comprehensive Loss |  |  |  | Affected Line Item in the Condensed Consolidated Statements of Income
|  | Three Months Ended |  |  |  |
|  | September 30, |  |  |  |
|  | 2021 |  |  |  | 2020 |  |  |  |
Pension and other postretirement benefit items: |  |  |  |  |  |  |  |  |  |  |  |
Amortization of actuarial loss |  | $ | (236 | ) | (1) |  | $ | (267 | ) | (1) |  | Loss before benefit for income taxes
|  |  | (53 | ) |  |  |  | (63 | ) |  |  | Benefit for income taxes
|  | $ | (183 | ) |  |  | $ | (204 | ) |  |  | Net loss
Details about Accumulated Other Comprehensive Loss Components |  | Amount Reclassified from Accumulated Other Comprehensive Loss |  |  |  | Affected Line Item in the Condensed Consolidated Statements of Income
|  | Six Months Ended |  |  |  |
|  | September 30, |  |  |  |
|  | 2021 |  |  |  | 2020 |  |  |  |
Pension and other postretirement benefit items: |  |  |  |  |  |  |  |  |  |  |  |
Amortization of actuarial loss |  | $ | (455 | ) | (1) |  | $ | (533 | ) | (1) |  | Loss before benefit for income taxes
|  |  | (102 | ) |  |  |  | (124 | ) |  |  | Benefit for income taxes
|  | $ | (353 | ) |  |  | $ | (409 | ) |  |  | Net loss
(1) | These accumulated other comprehensive loss components are included within the computation of pension and other postretirement benefit costs. See Note 10.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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