The amount of debt discount of the conversion feature embedded in the debt instrument.

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The amount of debt issue costs of the conversion feature embedded in the debt instrument.

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No definition available.

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The amount of the conversion of notes into common stock and embedded derivative change in value upon the conversion.

+ References

No definition available.

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- Definition

The principal amount converted, before debt discount and debt issue costs, of the conversion feature embedded in the debt instrument.

+ References

No definition available.

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The principal amount converted, less debt discount and debt issue costs, of the conversion feature embedded in the debt instrument.

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No definition available.

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- Definition

The amount of embedded derivative classified from the conversion of a note into common stock change in value upon the conversion.

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No definition available.

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- Definition

Represents the exchange of debt.

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No definition available.

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- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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Amount of amortization expense attributable to debt issuance costs.

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Carrying amount of long-term convertible debt as of the balance sheet date, net of the amount due in the next twelve months or greater than the normal operating cycle, if longer. The debt is convertible into another form of financial instrument, typically the entity's common stock.

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Face (par) amount of debt instrument at time of issuance.

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Amount, after accumulated amortization, of debt discount.

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Net fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as assets, net of those classified as liabilities.

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Net Increase or Decrease in the fair value of the embedded derivative or group of embedded derivatives included in earnings in the period.

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Interest paid other than in cash for example by issuing additional debt securities. As a noncash item, it is added to net income when calculating cash provided by or used in operations using the indirect method.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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Note 9 - Debt - Information Pertaining to Convertible Notes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net, Total	$ (511)	$ (1,662)	$ 2,347	$ (1,662)
Embedded Derivative, 2020 Convertible Notes [Member]
Balance - December 31, 2017			5,224
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net, Total			(2,347)
Conversion of 2020 Notes into common stock			(2,193)
Balance - June 30, 2018	684		684
Convertible 2020 Notes [Member]
Balance - December 31, 2017			13,491
Balance - December 31, 2017			5,200
Amortization of debt discount			566
Amortization of debt issue costs			150
Paid-in-kind interest			168
Conversion of 2020 Notes into common stock			(2,644)
Balance - June 30, 2018	11,731		11,731
Balance - June 30, 2018	700		700
Convertible 2020 Notes [Member] \| Embedded Derivative, 2020 Convertible Notes [Member]
Balance - December 31, 2017			18,715
Amortization of debt discount			566
Amortization of debt issue costs			150
Paid-in-kind interest			168
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net, Total			(2,347)
Conversion of 2020 Notes into common stock			(4,837)
Balance - June 30, 2018	12,415		12,415
Convertible 2020 Notes [Member] \| Principal Amount of 2020 Notes [Member]
Balance - December 31, 2017			16,657
Paid-in-kind interest			168
Conversion of 2020 Notes into common stock			(3,186)
Balance - June 30, 2018	13,639		13,639
Convertible 2020 Notes [Member] \| Debt Issue Costs [Member]
Balance - December 31, 2017			(2,501)
Amortization of debt discount			566
Conversion of 2020 Notes into common stock			428
Balance - June 30, 2018	(1,507)		(1,507)
Convertible 2020 Notes [Member] \| Debt Discount [Member]
Balance - December 31, 2017			(665)
Amortization of debt issue costs			150
Conversion of 2020 Notes into common stock			114
Balance - June 30, 2018	(401)		(401)
Convertible 2022 Notes [Member]
Balance - December 31, 2017			0
Convertible 2022 Notes [Member] \| Principal Amount of 2022 Notes [Member]
Balance - December 31, 2017			515
Balance - June 30, 2018
Exchange of 2022 Notes			$ (515)