Fair Value of Financial Instruments	6 Months Ended
Fair Value of Financial Instruments	Mar. 31, 2014
Fair Value of Financial Instruments
Fair Value of Financial Instruments	8. Fair Value of Financial Instruments Headwaters’ material financial instruments consist primarily of cash and cash equivalents, trade receivables, accounts payable and long-term debt. All of these financial instruments except long-term debt are either carried at fair value in the consolidated balance sheets or are short-term in nature. Accordingly, the carrying values for those financial instruments as reflected in the consolidated balance sheets closely approximate their fair values. All of Headwaters’ outstanding long-term debt as of September 30, 2013 and March 31, 2014 was fixed-rate. Using fair values for the debt, the aggregate fair value of Headwaters’ long-term debt as of September 30, 2013 would have been approximately $484.0 million, compared to a carrying value of $457.5 million, and the aggregate fair value as of March 31, 2014 would have been approximately $643.0 million, compared to a carrying value of $599.5 million. Fair value “Level 2” estimates for long-term debt were based primarily on price estimates from broker-dealers. The fair values for long-term debt differ from the carrying values primarily due to interest rates that differ from current market interest rates and differences between Headwaters’ common stock price at the balance sheet measurement dates and the conversion prices for the convertible senior subordinated notes.

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

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