Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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-Section 45

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

+ References

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The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

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

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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-Name Accounting Standards Codification

-Topic 225

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

-Topic 210

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-Section S99

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-Subparagraph (SX 210.5-02.22)

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-Name Accounting Standards Codification

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Debt Obligations - Junior Subordinated Notes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended	0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2015	Sep. 30, 2014
Debt Instrument [Line Items]
Total debt obligations	$ 553,919us-gaap_LongTermDebt		$ 553,919us-gaap_LongTermDebt	553,919us-gaap_LongTermDebt	519,806us-gaap_LongTermDebt
Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Total debt obligations	37,400		37,400	37,400	37,400
Interest Expense	458	458	916
Amortization of deferred costs included in interest expense	$ 5	$ 5	$ 10
Debt Instrument, Interest Rate 30 April, 2016 Through 30 April, 2036 [Member] \| Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis				LIBOR	LIBOR
Basis spread on variable rate				2.00%	2.00%
Debt Instrument, Interest Rate 1 August, 2012 Through 29 April, 2016 [Member] \| Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Interest Rate	4.90%		4.90%	4.90%	4.90%