NEW MARKETS TAX CREDIT TRANSACTIONS (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
Dec. 31, 2015	Aug. 31, 2016
Income Tax Contingency [Line Items]
Capital Contribution Received Under New Markets Tax Program	$ 17.7
Payments for qualified construction, development and equipping activities		$ 27.2
Restricted cash		$ 21.7
Commonwealth
Income Tax Contingency [Line Items]
Loans and Leases Receivable, Gross	$ 35.3
Loan Receivable, Stated Interest Rate	1.08%
Investment Fund
Income Tax Contingency [Line Items]
Qualified Equity Investment Into Community Development Entities	$ 51.5
Qualified Equity Investment Loans \| CMC Steel Oklahoma, LLC
Income Tax Contingency [Line Items]
Loans Payable	$ 50.7

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Loan Receivable, Stated Interest Rate

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Qualified Equity Investment Into Community Development Entities

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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