Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Fair value of financial and nonfinancial obligations.

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Note 6 - Fair Value of Financial Instruments - Fair Value Measurements, Recorded (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Fair Value, Inputs, Level 1 [Member] \| Metals Swap [Member]
Assets:
Derivative asset
Liabilities:
Derivative liability
Fair Value, Inputs, Level 1 [Member] \| Embedded Derivative Financial Instruments [Member]
Assets:
Derivative asset
Liabilities:
Derivative liability
Fair Value, Inputs, Level 1 [Member] \| Interest Rate Swap [Member]
Liabilities:
Derivative liability
Fair Value, Inputs, Level 1 [Member] \| Fixed Interest Rate Swap [Member]
Liabilities:
Derivative liability
Fair Value, Inputs, Level 1 [Member]
Assets:
Total assets at fair value
Liabilities:
Total liabilities recorded at fair value
Fair Value, Inputs, Level 2 [Member] \| Metals Swap [Member]
Assets:
Derivative asset	87
Liabilities:
Derivative liability		384
Fair Value, Inputs, Level 2 [Member] \| Embedded Derivative Financial Instruments [Member]
Assets:
Derivative asset		384
Liabilities:
Derivative liability	87
Fair Value, Inputs, Level 2 [Member] \| Interest Rate Swap [Member]
Liabilities:
Derivative liability	49	102
Fair Value, Inputs, Level 2 [Member] \| Fixed Interest Rate Swap [Member]
Liabilities:
Derivative liability		114
Fair Value, Inputs, Level 2 [Member]
Assets:
Total assets at fair value	87	384
Liabilities:
Total liabilities recorded at fair value	136	600
Fair Value, Inputs, Level 3 [Member] \| Metals Swap [Member]
Assets:
Derivative asset
Liabilities:
Derivative liability
Fair Value, Inputs, Level 3 [Member] \| Embedded Derivative Financial Instruments [Member]
Assets:
Derivative asset
Liabilities:
Derivative liability
Fair Value, Inputs, Level 3 [Member] \| Interest Rate Swap [Member]
Liabilities:
Derivative liability
Fair Value, Inputs, Level 3 [Member] \| Fixed Interest Rate Swap [Member]
Liabilities:
Derivative liability
Fair Value, Inputs, Level 3 [Member]
Assets:
Total assets at fair value
Liabilities:
Total liabilities recorded at fair value
Metals Swap [Member]
Assets:
Derivative asset	87
Liabilities:
Derivative liability		384
Embedded Derivative Financial Instruments [Member]
Assets:
Derivative asset		384
Liabilities:
Derivative liability	87
Interest Rate Swap [Member]
Liabilities:
Derivative liability	49	102
Fixed Interest Rate Swap [Member]
Liabilities:
Derivative liability		114
Total assets at fair value	87	384
Total liabilities recorded at fair value	$ 136	$ 600