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Note 18 - Stock Option and Purchase Plans (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]

		Year ended December 31,
		2017				2016
Expected life (years)			4.0				4.0
Expected volatility			51.2	%			52.0	%
Risk-free interest rates			1.91	%			1.42	%
Expected dividend yield			0.0	%			0.0	%

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

						Weighted
						Average
		Number of				Grant Date
		Shares				Fair Value
Nonvested shares at January 1, 2017			1,165,000			$	1.49
Granted			199,000				1.06
Vested			(296,000	)			2.26
Forfeited			(39,000	)			1.15
Nonvested shares at December 31, 2017			1,029,000			$	1.20

Share-based Compensation, Stock Options, Activity [Table Text Block]

						Weighted-				Weighted-
						average				average				Aggregate
		Number of				Exercise Price				Remaining				Intrinsic
		Shares				Per Share				Term				Value
Outstanding at January 1, 2017			1,908,250			$	2.07
Granted			272,500				1.08
Exercised			0				0
Forfeited			(45,000	)			1.16
Expired			(314,750	)			3.49
Outstanding at December 31, 2017			1,821,000			$	1.70				2.28			$	444,000
Exercisable at December 31, 2017			523,200			$	2.99				0.99			$	34,000

X

- Definition

Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
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- Definition

Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

+ References

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-Section 50
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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

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-Publisher FASB
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