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Fair Value Measurements - Additional Information (Detail) (USD $)
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3 Months Ended | 12 Months Ended | |||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2013
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Sep. 30, 2012
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Sep. 30, 2011
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| Derivative Instruments, Gain (Loss) [Line Items] | |||||
| Unrealized gain on derivatives | $ 23,000 | $ 29,000 | $ 15,000 | $ 73,000 | $ 35,000 |
| Cash deposits held in U.S. banks | 81,700,000 | 23,000,000 | |||
| Bank deposits | 80,300,000 | 21,300,000 | |||
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Interest Rate Swap [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | |||||
| Total fair value of interest rate derivatives | $ 100,000 | ||||
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Minimum [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | |||||
| Discount rates based on market observations | 7.00% | ||||
| Discount rates to determine fair market value of underlying assets | 8.00% | ||||
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Maximum [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | |||||
| Discount rates based on market observations | 15.00% | ||||
| Discount rates to determine fair market value of underlying assets | 10.00% | ||||
| X | ||||||||||
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- Definition
Cash Federal Deposit Insurance Corporation Non Insured Amount. No definition available.
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| X | ||||||||||
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- Definition
Discount rate which is used to value residual cash flows generated by financial assets of the securitization, asset-backed financing arrangement, or similar transfer for initial fair value measurement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Fair value of the assets less the liabilities of a derivative or group of derivatives. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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