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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Tax expense (benefit) related to reclassification adjustment for losses included in net income | $ 0 | $ 0 | $ 12 | $ (394)
Tax expense (benefit) related to unrealized holding gains (losses) arising during period | (6,178) | 332 | (11,311) | 9,824
Tax expense (benefit) related to gains on the sale of securities | 2 | 4 | 18 | 2,582
Tax expense (benefit) related to unrealized gain for AFS securities transferred to HTM | $ 1 | $ 1 | $ 4 | 4
Cash Flow Hedging |  |  |  |
Unrealized gain (loss) within accumulated other comprehensive income, to be reclassified into earnings |  |  |  | $ (1,800)

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 + Details
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- Definition Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e640-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27357-111563 + Details
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