Mortgage Loans (Tables)

12 Months Ended

Dec. 31, 2019

Receivables [Abstract]

Distribution Based on Carrying Amount of Mortgage Loans by Location

The distribution based on carrying amount of mortgage loans by location is as follows:

	December 31,
	2019		2018
East North Central	13.1	%	13.9	%
East South Central	2.8		2.8
Mountain	23.6		20.0
Pacific	16.7		16.2
South Atlantic	12.2		12.1
West South Central	25.0		27.2
Other	6.6		7.8
Total	100.0	%	100.0	%

Age Analysis of Past Due Loans

The age analysis of past due loans is shown below (in thousands):

	30-59 Days		60-89 Days		More Than						Total
December 31, 2019	Past Due		Past Due		90 Days		Total		Current		Amount			Percent
Hotel	$	—	$	—	$	—	$	—	$	901,044	$	901,044		17.6	%
Industrial	—		13,076		4,091		17,167		589,722		606,889			11.9
Office	22,870		—		—		22,870		1,587,591		1,610,461			31.5
Retail	—		—		4,122		4,122		843,466		847,588			16.5
Other	11,759		—		—		11,759		1,138,436		1,150,195			22.5
Total	$	34,629	$	13,076	$	8,213	$	55,918	$	5,060,259	$	5,116,177		100.0	%
Allowance for loan losses											(19,160		)
Total, net of allowance											$	5,097,017
December 31, 2018
Hotel	$	—	$	4,000	$	18,888	$	22,888	$	806,878	$	829,766		16.1	%
Industrial	—		—		—		—		761,294		761,294			14.8
Office	—		—		—		—		1,747,926		1,747,926			34.0
Retail	—		—		—		—		896,429		896,429			17.4
Other	—		—		—		—		910,625		910,625			17.7
Total	$	—	$	4,000	$	18,888	$	22,888	$	5,123,152	$	5,146,040		100.0	%
Allowance for loan losses											(21,333		)
Total, net of allowance											$	5,124,707

Change in Allowance for Credit Losses in Mortgage Loans

The change in allowance for credit losses in mortgage loans is shown below (in thousands, except number of loans):

	Collectively Evaluated for Impairment							Individually Impaired								Total
	Number of Loans		Recorded Investment			Valuation Allowance		Number of Loans		Recorded Investment			Valuation Allowance			Number of Loans		Recorded Investment			Valuation Allowance
Balance at December 31, 2017	451		$	4,762,315		$	16,041	3		$	6,550		$	2,825		454		$	4,768,865		$	18,866
Change in allowance	—		—			2,566		—		—			(99		)	—		—			2,467
Net change in recorded investment	(2	)	366,102			—		(1	)	11,073			—			(3	)	377,175			—
Balance at December 31, 2018	449		5,128,417			18,607		2		17,623			2,726			451		5,146,040			21,333
Change in allowance	—		—			60		—		—			(2,233		)	—		—			(2,173		)
Net change in recorded investment	(28	)	(12,733		)	—		(1	)	(17,130		)	—			(29	)	(29,863		)	—
Balance at December 31, 2019	421		$	5,115,684		$	18,667	1		$	493		$	493		422		$	5,116,177		$	19,160

Schedule of Troubled Debt Restructuring Mortgage Loan Information

Troubled debt restructuring mortgage loan information is as follows (in thousands, except number of loans):

	Years ended December 31,
	2019					2018
	Number of Loans	Recorded Investment  Pre-Modification		Recorded Investment  Post Modification		Number of Loans	Recorded Investment  Pre-Modification		Recorded Investment  Post Modification
Office	2	$	21,211	$	21,211	1	$	5,164	$	5,164
Retail	1	38,248		38,248		1	42,448		42,448
Other (hotel/motel)	—	—		—		1	8,203		8,203
Total	3	$	59,459	$	59,459	3	$	55,815	$	55,815