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ACCUMULATED OTHER COMPREHENSIVE LOSS | 9 Months Ended
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Sep. 30, 2022
ACCUMULATED OTHER COMPREHENSIVE LOSS |
ACCUMULATED OTHER COMPREHENSIVE LOSS | 12. ACCUMULATED OTHER COMPREHENSIVE LOSS Accumulated other comprehensive loss consists of pension adjustments as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine months ended
​ | ​ | September 30,
(in thousands) | ​ | 2022 | ​ | 2021
Balance at beginning of the period | ​ | $ | (2,576) | ​ | $ | (1,947)
Change during the period: | ​ |  | ​ | ​ |  | ​
Amortization of net loss (1) | ​ |  | 67 | ​ |  | 42
Balance at end of the period | ​ | $ | (2,509) | ​ | $ | (1,905)
| (1) | Reported as part of Selling, general and administrative expenses in the accompanying Consolidated Statements of Operations.

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI https://asc.fasb.org/topic&trid=2134417 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI https://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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