No definition available.

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- Definition

The fair value of shares that the employees use to repay the employer for net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations.

+ References

No definition available.

+ Details

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- Definition

The per share fair value of shares that the employees use to repay the employer for net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations.

+ References

No definition available.

+ Details

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- Definition

Transaction costs for repurchase of equity.

+ References

No definition available.

+ Details

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 30
-Article 5

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 30
-Article 5

+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of shares that have been repurchased and retired during the period.

+ References

+ Details

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Data Type:	xbrli:sharesItemType
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Period Type:	duration

- Definition

Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

+ References

+ Details

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Balance Type:	debit
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- Definition

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Stock Split
-URI http://asc.fasb.org/extlink&oid=6525746

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- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

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Note 11 - Common Shares (Details)		3 Months Ended						12 Months Ended
Note 11 - Common Shares (Details)	Jan. 07, 2015 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Sep. 30, 2015 USD ($) shares	Jun. 30, 2015 USD ($) shares	Mar. 31, 2015 USD ($) shares	Sep. 30, 2014 USD ($) shares	Mar. 31, 2014 USD ($) shares	Dec. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($) shares	Dec. 31, 2013 USD ($) shares	Feb. 11, 2015 USD ($)	Mar. 05, 2014 USD ($)
Note 11 - Common Shares (Details) [Line Items]
Common Stock, Shares Authorized \| shares		250,000,000						250,000,000	250,000,000
Common Stock, Shares, Outstanding \| shares	11,135,825	10,685,599						10,685,599	11,329,732
Stockholders' Equity Note, Stock Split, Conversion Ratio								4
Stock Repurchased and Retired During Period, Shares \| shares								1,062,456	79,392	1,064,299
Stock Repurchased and Retired During Period, Value (in Dollars) \| $								$ 23,616,286	$ 1,181,858	$ 6,537,616
Common Stock, Shares, Issued \| shares	11,135,825	10,685,599						10,685,599	11,329,732
Shares Paid for Tax Withholding for Share Based Compensation \| shares		99,675						99,675
Shares Paid for Tax Withholding for Share Based Compensation, Price per Share, Fair Value (in Dollars per share) \| $ / shares		$ 23.43
Shares Paid for Tax Withholding for Share Based Compensation, Fair Value (in Dollars) \| $		$ 2,300,000
Dutch Auction Tender Offer [Member]
Note 11 - Common Shares (Details) [Line Items]
Stock Repurchased and Retired During Period, Shares \| shares	193,907
Treasury Stock Acquired, Average Cost Per Share (in Dollars per share) \| $ / shares	$ 18.50
Stock Repurchased and Retired During Period, Value (in Dollars) \| $	$ 3,587,280
Stock Repurchased Transaction Costs (in Dollars) \| $	$ 70,000
Stock Buyback Program 2015 [Member]
Note 11 - Common Shares (Details) [Line Items]
Stock Repurchased and Retired During Period, Shares \| shares		231,047	398,000	25,413	214,089			868,549
Stock Repurchased and Retired During Period, Value (in Dollars) \| $		$ 5,400,000	$ 10,000,000	$ 500,000	$ 4,100,000			$ 20,000,000
Stock Repurchase Program, Authorized Amount (in Dollars) \| $											$ 20,000,000
Stock Buyback Program 2014 [Member]
Note 11 - Common Shares (Details) [Line Items]
Stock Repurchased and Retired During Period, Shares \| shares						73,300	6,092		79,392
Stock Repurchased and Retired During Period, Value (in Dollars) \| $						$ 1,100,000	$ 82,286		$ 1,200,000
Stock Repurchase Program, Authorized Amount (in Dollars) \| $												$ 20,000,000