Mortgage Loans on Real Estate Mortgage Loans on Real Estate (Tables)

12 Months Ended

Dec. 31, 2012

Mortgage Loans on Real Estate [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]



	December 31,
	2012			2011
	(Dollars in thousands)
Principal outstanding	$	2,658,883		$	2,856,011
Loan loss allowance	(34,234		)	(32,964		)
Deferred prepayment fees	(709		)	—
Carrying value	$	2,623,940		$	2,823,047

Schedule of Commercial Mortgage Loans by Geographic Region and Specific Collateral Property Type [Table Text Block]

The portfolio consists of commercial mortgage loans collateralized by the related properties and diversified as to property type, location and loan size. Our mortgage lending policies establish limits on the amount that can be loaned to one borrower and other criteria to attempt to reduce the risk of default. The mortgage loan portfolio is summarized by geographic region and property type as follows:



	December 31,
	2012				2011
	Principal		Percent		Principal		Percent
	(Dollars in thousands)
Geographic distribution
East	$	732,762	27.5	%	$	719,231	25.2	%
Middle Atlantic	155,094		5.8	%	169,240		5.9	%
Mountain	387,599		14.6	%	411,054		14.4	%
New England	26,385		1.0	%	36,815		1.3	%
Pacific	320,982		12.1	%	309,693		10.8	%
South Atlantic	458,802		17.3	%	493,764		17.3	%
West North Central	370,168		13.9	%	487,693		17.1	%
West South Central	207,091		7.8	%	228,521		8.0	%
	$	2,658,883	100.0	%	$	2,856,011	100.0	%
Property type distribution
Office	$	666,467	25.1	%	$	777,343	27.2	%
Medical Office	136,764		5.1	%	175,580		6.1	%
Retail	677,951		25.5	%	635,916		22.3	%
Industrial/Warehouse	692,637		26.1	%	710,426		24.9	%
Hotel	94,045		3.5	%	139,193		4.9	%
Apartment	219,335		8.2	%	187,548		6.6	%
Mixed use/other	171,684		6.5	%	230,005		8.0	%
	$	2,658,883	100.0	%	$	2,856,011	100.0	%

Allowance for Credit Losses on Financing Receivables [Table Text Block]

The following table presents a rollforward of our specific and general valuation allowances for mortgage loans on real estate:



	Year Ended December 31,
	2012						2011						2010
	Specific Allowance			General Allowance			Specific Allowance			General Allowance			Specific Allowance			General Allowance
	(Dollars in thousands)
Beginning allowance balance	$	(23,664	)	$	(9,300	)	$	(13,224	)	$	(3,000	)	$	(5,266	)	$	—
Charge-offs	15,562			—			14,030			—			4,267			—
Recoveries	—			—			—			—			—			—
Provision for credit losses	(15,032		)	(1,800		)	(24,470		)	(6,300		)	(12,225		)	(3,000		)
Ending allowance balance	$	(23,134	)	$	(11,100	)	$	(23,664	)	$	(9,300	)	$	(13,224	)	$	(3,000	)

Impaired Mortgage Loans on Real Estate by Basis of Impairment [Table Text Block]

The specific allowance is a total of credit loss allowances on loans which are individually evaluated for impairment. The general allowance is the group of loans discussed above which are collectively evaluated for impairment. The following table presents the total outstanding principal of loans evaluated for impairment by basis of impairment method:



	December 31,
	2012		2011		2010
	(Dollars in thousands)
Individually evaluated for impairment	$	53,110	$	67,698	31,027
Collectively evaluated for impairment	2,605,723		2,788,313		2,583,838
Total loans evaluated for impairment	$	2,658,833	$	2,856,011	2,614,865

Real Estate Acquired Via Foreclosure or Deed In Lieu [Table Text Block]

The following table summarizes the activity in the real estate owned which was obtained in satisfaction of mortgage loans on real estate:



	Year Ended December 31,
	2012			2011			2010
	(Dollars in thousands)
Real estate owned at beginning of period	$	36,821		$	19,122		$	12,268
Real estate acquired in satisfaction of mortgage loans	26,324			20,978			7,408
Additions	398			387			352
Sales	(23,825		)	(3,027		)	—
Impairments	(5,677		)	—			(542		)
Depreciation	(869		)	(639		)	(364		)
Real estate owned at end of period	$	33,172		$	36,821		$	19,122

Financing Receivable Credit Quality Indicators [Table Text Block]

We analyze credit risk of our mortgage loans by analyzing all available evidence on loans that are delinquent and loans that are in a workout period.



	December 31,
	2012		2011
	(Dollars in thousands)
Credit Exposure--By Payment Activity
Performing	$	2,597,440	2,743,068
In workout	26,723		67,425
Delinquent	—		6,595
Collateral dependent	34,720		38,923
	$	2,658,883	$	2,856,011

Past Due Financing Receivables [Table Text Block]

Aging of financing receivables is summarized in the following table, with loans in a "workout" period as of the reporting date considered current if payments are current in accordance with agree upon terms:



	30 - 59 Days		60 - 89 Days		90 Days and Over		Total Past Due		Current		Collateral Dependent Receivables		Total Financing Receivables
	(Dollars in thousands)
Commercial Mortgage Loans
December 31, 2012	$	—	$	—	$	—	$	—	$	2,624,113	$	34,720	$	2,658,833
December 31, 2011	$	3,378	$	—	$	6,595	$	9,973	$	2,807,115	$	38,923	$	2,856,011

Impaired Financing Receivables [Table Text Block]

Financing receivables summarized in the following table represent all loans that we are either not currently collecting or those we feel it is probable we will not collect all amounts due according to the contractual terms of the loan agreements (all loans that we have worked with the borrower to alleviate short-term cash flow issues, loans delinquent for more than 60 days at the reporting date, loans we have determined to be collateral dependent and loans that we have recorded specific impairments on that we feel may continue to have performance issues).



	Recorded Investment		Unpaid Principal Balance		Related Allowance			Average Recorded Investment		Interest Income Recognized
	(Dollars in thousands)
December 31, 2012
Mortgage loans with an allowance	$	29,976	$	53,110	$	(23,134	)	$	37,480	$	1,946
Mortgage loans with no related allowance	27,765		27,765		—			27,696		1,664
	$	57,741	$	80,875	$	(23,134	)	$	65,176	$	3,610
December 31, 2011
Mortgage loans with an allowance	$	44,034	$	67,698	$	(23,664	)	$	53,617	$	3,284
Mortgage loans with no related allowance	63,023		63,023		—			60,974		3,509
	$	107,057	$	130,721	$	(23,664	)	$	114,591	$	6,793
December 31, 2010
Mortgage loans with an allowance	$	17,803	$	31,027	$	(13,224	)	$	24,062	$	656
Mortgage loans with no related allowance	81,994		81,994		—			82,535		4,921
	$	99,797	$	113,021	$	(13,224	)	$	106,597	$	5,577

Troubled Debt Restructurings on Financing Receivables Workout Loans [Table Text Block]



Geographic Region	Number of Mortgage Loans	Principal Balance Outstanding		Specific Loan Loss Allowance			Net Carrying Amount
		(Dollars in thousands)
Year ended December 31, 2012:
East	1	$	4,208	$	(1,425	)	$	2,783
Mountain	10	28,786		(1,702		)	27,084
South Atlantic	9	23,358		(5,047		)	18,311
East North Central	1	2,232		(467		)	1,765
West North Central	3	9,466		(2,328		)	7,138
	24	$	68,050	$	(10,969	)	$	57,081

Year ended December 31, 2011:
East	3	$	8,489	$	(2,115	)	$	6,374
Mountain	10	29,539		(1,637		)	27,902
South Atlantic	11	28,676		(6,339		)	22,337
West North Central	1	1,937		(269		)	1,668
	25	$	68,641	$	(10,360	)	$	58,281