Mortgage Notes Payable and Exchangeable Bonds (Tables)

12 Months Ended

Dec. 31, 2011

Mortgage Notes Payable [Abstract]

Mortgages notes payable

Mortgage notes payable consist of the following as of December 31, 2011 and 2010 ($ in thousands):

	2011		2010
Mortgage notes payable, secured by deeds of trust, bearing interest at ranges ranging from 49% to 74% as of December 31, 2011 principal and interest payments due monthly, and maturity dates ranging from August 2012 through April 2021	$	1,502,208	$	1,563,513
Multifamily housing mortgage revenue bonds secured by deeds of trust on  rental properties and guaranteed by collateral pledge agreements, payable monthly at a variable rate as defined in the Loan Agreement  (approximately 20% at December 2011 and 21% at December 2010), plus credit enhancement and underwriting fees ranging from approximately12% to 19% Among the terms imposed on the properties, which are security for the bonds, is a requirement that 20% of the units are subject to tenant income criteria Principal balances are due in full at various maturity dates from June 2012 through December 2039  Of these bonds $1878 million are subject to various interest rate cap agreements which limit the maximum interest rate to such bonds		243,650		269,232
	$	1,745,858	$	1,832,745

Aggregate scheduled principal payments of mortgage notes payable

The aggregate scheduled principal payments of mortgage notes payable are as follows ($ in thousands):

2012	$	35,953
2013		215,583
2014		77,179
2015		70,305
2016		12,907
Thereafter		1,333,931
	$	1,745,858