Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Section 45
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6935-107765

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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Number of stock bought back by the entity at the exercise price or redemption price.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

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Equity impact of the value of stock bought back by the entity at the exercise price or redemption price.

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Note 10 - Preferred Stock (Details Textual) - USD ($)	May 17, 2018	Jun. 30, 2018	Dec. 31, 2017
Preferred Stock, Shares Outstanding, Ending Balance		3,187	4,250
Series A Preferred Stock [Member]
Stock Redeemed or Called During Period, Shares	1,063
Stock Redeemed or Called During Period, Value	$ 1,063,000
Preferred Stock, Shares Outstanding, Ending Balance		3,187
Accrued Liabilities Current [Member] \| Series A Preferred Stock [Member]
Dividends Payable, Current		$ 93,258