Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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Amount of assets pledged to secure a debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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The average effective interest rate during the reporting period.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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No definition available.

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Including the current and noncurrent portions, carrying value at the balance sheet date of a financial instrument used to receive debt funding on a regular basis with original maturities ranging from 5-10 years.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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Carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Senior note holders are paid off in full before any payments are made to junior note holders.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of a type of municipal bond typically used to fund a development project. Also called special assessment limited liability bond, special district bond, special purpose bond, special tax bond and community development obligation. Interest owed to lenders is paid by taxes levied on the community benefiting from the particular bond-funded project. For example, if a bond of this sort was issued to pay for sidewalks to be repaved in a certain community, an additional tax would be levied on homeowners in the area benefiting from this project.

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Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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Additional amount that may be borrowed under the debt instrument agreement without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility if the accordion feature is utilized.

+ References

No definition available.

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Debt Coverage Ratio

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No definition available.

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Potential maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility if the accordion feature is utilized.

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No definition available.

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Line of Credit Facility, Extension Period

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Line of Credit Facility, Fixed Interest Rate Loan Period

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Maximum amount allowed under the line of credit competitive bid feature.

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Line of Credit Faciltiy, Number of Extensions

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Debt (Narrative) (Details) (USD $)	3 Months Ended		12 Months Ended	1 Months Ended
Debt (Narrative) (Details) (USD $)	Mar. 31, 2015	Sep. 30, 2014	Dec. 31, 2014	May 31, 2010	Mar. 31, 2015	Apr. 18, 2013
Debt Instrument [Line Items]
Debt service guaranty liability	$ 72,105,000us-gaap_SpecialAssessmentBond		$ 72,105,000us-gaap_SpecialAssessmentBond		$ 72,105,000us-gaap_SpecialAssessmentBond
Medium term notes, matured	90,000,000us-gaap_MediumTermNotes		315,000,000us-gaap_MediumTermNotes		90,000,000us-gaap_MediumTermNotes
Secured debt	66,000,000us-gaap_SecuredDebt				66,000,000us-gaap_SecuredDebt
Debt interest rate during period	5.40%		5.20%
Debt stated interest rate	3.50%		7.40%		3.50%
Write off of debt costs		1,200,000
Debt instruments collateral value	900,000,000us-gaap_DebtInstrumentCollateralAmount		1,000,000,000us-gaap_DebtInstrumentCollateralAmount		900,000,000us-gaap_DebtInstrumentCollateralAmount
Unsecured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity under credit facility						500,000,000
Number of credit facility 6-month extensions	2				2
Line of credit facility, extension period	6 months
Facility fees, basis points	0.20%
Bids amount	250,000,000				250,000,000
Maximum increase in credit facility amount	700,000,000				700,000,000
Unsecured And Uncommitted Overnight Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity under credit facility				99,000,000
Fixed interest rate loan period (in days)				30 days
Debt Service Guaranty [Member]
Debt Instrument [Line Items]
Debt coverage ratio	1.4				1.4
Term Loan [Member]
Debt Instrument [Line Items]
Debt payable	200,000,000				200,000,000
Debt effective percentage	2.60%				2.60%
Maximum increase in term loan amount	100,000,000				100,000,000
8.1% Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Senior unsecured notes			100,000,000
Debt stated interest rate			8.10%
Debt redemption price, percentage			100.00%
Short-Term Unsecured Facility [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity under credit facility	20,000,000				20,000,000
Facility fees, basis points					0.10%
Fixed interest rate loan period (in days)					30 days
Thirty-Day LIBOR [Member] \| Short-Term Unsecured Facility [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Borrowing margin over LIBOR, basis points					1.25%
London Interbank Offered Rate (LIBOR) [Member] \| Unsecured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Borrowing margin over LIBOR, basis points	1.15%
London Interbank Offered Rate (LIBOR) [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Borrowing margin over LIBOR, basis points					1.15%
Interest Expense [Member]
Debt Instrument [Line Items]
Payments of debt extinguishment costs	$ 6,100,000