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Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Summary Of Significant Accounting Policies [Abstract]

Schedule Of Uncollectible Reinsurance Recoverable And Premium Receivables

	Years Ended December 31,
(Dollars in thousands)	2019			2018
Reinsurance receivables and premium receivables	$	25,605			25,611

Schedule Of Deferred Acquisition Costs Amortized To Income

	Years Ended December 31,
(Dollars in thousands)	2019			2018			2017
Deferred acquisition costs	$	1,703,726		$	1,519,030		$	1,303,963

Net Income (Loss) Per Common Share

		Years Ended December 31,
(Dollars in thousands, except per share amounts)		2019				2018				2017
Net income (loss) per share:
Numerator
Net income (loss)		$	1,009,461			$	89,041			$	482,751
Less: dividends declared-common shares and nonvested common shares			(234,322)				(216,221)				(207,242)
Undistributed earnings			775,139				(127,180)				275,508
Percentage allocated to common shareholders (1)			98.9	%			99.0	%			98.9	%
			766,386				(125,848)				272,589
Add: dividends declared-common shareholders			231,796				214,088				205,182
Numerator for basic and diluted earnings per common share		$	998,182			$	88,239			$	477,771

Denominator
Denominator for basic earnings per weighted-average common shares			40,291				40,388				40,595
Effect of dilutive securities:
Options			129				198				248
Denominator for diluted earnings per adjusted weighted-average common shares			40,420				40,586				40,843

Per common share net income (loss)
Basic		$	24.77			$	2.18			$	11.77
Diluted		$	24.70			$	2.17			$	11.70

⁽¹⁾	Basic weighted-average common shares outstanding		40,291				40,388				40,595
	Basic weighted-average common shares outstanding and nonvested common shares expected to vest		40,751				40,816				41,030
	Percentage allocated to common shareholders		98.9	%			99.0	%			98.9	%

(Some amounts may not reconcile due to rounding.)

Fair Value Of The Equity Index Put Options

(Dollars in thousands)
Derivatives not designated as		Location of fair value		At December 31,
hedging instruments		in balance sheets		2019			2018

Equity index put option contracts		Equity index put option liability		$	5,584		$	11,958
Total				$	5,584		$	11,958

Change In Fair Value Of The Equity Index Put Option Contracts

(Dollars in thousands)
		Location of gain (loss) in statements of operations and comprehensive income (loss)		For the Years Ended December 31,
Derivatives not designated as hedging instruments				2019			2018			2017

Equity index put option contracts		Net derivative gain (loss)		$	6,374		$	520		$	9,581
Total				$	6,374		$	520		$	9,581