Note 9 - Other Real Estate Investments (Detail) - Leveraged Lease Investment (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Remaining net rentals	$ 24.0	$ 30.8
Estimated unguaranteed residual value	30.3	30.3
Non-recourse mortgage debt	(19.0)	(25.1)
Unearned and deferred income	(27.6)	(29.9)
Net investment in leveraged lease	$ 7.7	$ 6.1

The estimated portion of pretax income and investment tax credit remaining to be allocated to income over the lease term.

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The net investment in arrangements meeting the criteria for classification as leveraged leases including deferred taxes.

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The portion of rentals receivable applicable to principal and interest on the nonrecourse debt.

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This element represents leveraged lease rentals receivable, net of that portion of the rental applicable to principal and interest on the nonrecourse debt.

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The estimate of the value of the leased asset at the end of the lease term.

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