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Accumulated Other Comprehensive Income (Tables)
 3 Months Ended
Mar. 31, 2021
Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Schedule Of Changes In Balances Of Each Component Of Accumulated Other Comprehensive Income, Net Of Tax
The following tables provide changes in the balances of each component of accumulated other comprehensive income, net of tax, for the periods ended March 31, 2021 and 2020:
Three Months Ended
March 31, 2021 (in thousands)		Unrealized Gains and Losses
On Available-for-Sale
Securities		Postretirement
Benefits Plans
 
Total
Beginning balance at January 1$4,470 $(144)$4,326 
Other comprehensive loss before reclassifications(592)— (592)
Amounts reclassified from accumulated other comprehensive income(18)— (18)
Net current-period other comprehensive loss(610)— (610)
Ending balance$3,860 $(144)$3,716 
Three Months Ended
March 31, 2020 (in thousands)		Unrealized Gains and Losses
On Available-for-Sale
Securities		Postretirement
Benefits Plans		Total
Beginning balance at January 1$3,132 $(32)$3,100 
Other comprehensive loss before reclassifications(304)(32)(336)
Amounts reclassified from accumulated other comprehensive income
348 — 348 
Net current-period other comprehensive income (loss)44 (32)12 
Ending balance
$3,176 $(64)$3,112 
Schedule Of Reclassification Out Of Accumulated Other Comprehensive Income
The following table provides significant amounts reclassified out of each component of accumulated other comprehensive income for the three-month periods ended March 31, 2021 and 2020:
Three Months Ended
March 31, 2021 (in thousands)		  
Details about Accumulated Other
Comprehensive Income Components (in thousands)		Amount Reclassified from
Accumulated Other
Comprehensive Income
 Affected Line Item in the Consolidated
Statements of Operations (unaudited)
Unrealized gains (losses) on available-for-sale securities:  
Net realized gain on investments$23  
Other-than-temporary impairments—  
Total$23  Net realized investment gains (losses)
Tax(5)Provision (benefit) for income taxes
Net of Tax$18  
Reclassifications for the period$18  

Three Months Ended
March 31, 2020 (in thousands)
Details about Accumulated Other
Comprehensive Income Components (in thousands)		Amount Reclassified from Accumulated Other Comprehensive IncomeAffected Line Item in the Consolidated Statements of Operations (unaudited)
Unrealized gains (losses) on available-for-sale securities:
Net realized gain on investments$30 
Other-than-temporary impairments(482)
Total$(452)Net realized investment gains (losses)
Tax104 Provision (benefit) for income taxes
Net of Tax$(348)
Reclassifications for the period$(348)