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Note 12 - Employee Stock Options Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Outstanding (in shares)	86,348	164,098	235,442
Outstanding (in dollars per share)	$ 11.09	$ 10.99	$ 11.38
Granted (in shares)	0	0	35,000
Granted (in dollars per share)			$ 10.44
Exercised (in shares)	(20,250)	(77,708)	(7,257)
Exercised (in dollars per share)	$ 11.65	$ 10.88	$ 10.94
Canceled (in shares)		(42)	(99,087)
Canceled (in dollars per share)		$ 11.22	$ 11.71
Outstanding (in shares)	66,098	86,348	164,098
Outstanding (in dollars per share)	$ 10.92	$ 11.09	$ 10.99
Options exercisable (in shares)	37,893
Options exercisable (in dollars per share)	$ 10.93

X

- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

+ References

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- Definition

Gross number of share options (or share units) granted during the period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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