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Note 14 - Stock-Based Compensation (Details) - Options Outstanding (USD $) | 12 Months Ended
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Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Number Outstanding (in Shares) | 662,506
Number Exercisable (in Shares) | 419,735
$7.72 to $8.93 [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise Price Range, Lower Range | $ 7.72
Exercise Price Range, Upper Range | $ 8.93
Number Outstanding (in Shares) | 58,510
Weighted Average Remaining Contractual Life | 6 years 332 days
Weighted Average Exercise Price Options Outstanding | $ 8.12
Number Exercisable (in Shares) | 22,520
Weighted Average Exercise Price Options Exercisable | $ 8.21
$9.00 to $11.64 [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise Price Range, Lower Range | $ 9.00
Exercise Price Range, Upper Range | $ 11.64
Number Outstanding (in Shares) | 212,004
Weighted Average Remaining Contractual Life | 6 years 299 days
Weighted Average Exercise Price Options Outstanding | $ 9.21
Number Exercisable (in Shares) | 101,355
Weighted Average Exercise Price Options Exercisable | $ 9.19
$13.25 to $16.85 [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise Price Range, Lower Range | $ 13.25
Exercise Price Range, Upper Range | $ 16.85
Number Outstanding (in Shares) | 243,567
Weighted Average Remaining Contractual Life | 5 years 328 days
Weighted Average Exercise Price Options Outstanding | $ 15.85
Number Exercisable (in Shares) | 149,435
Weighted Average Exercise Price Options Exercisable | $ 15.99
$17.00 to $18.60 [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise Price Range, Lower Range | $ 17.00
Exercise Price Range, Upper Range | $ 18.60
Number Outstanding (in Shares) | 51,840
Weighted Average Remaining Contractual Life | 2 years 18 days
Weighted Average Exercise Price Options Outstanding | $ 18.05
Number Exercisable (in Shares) | 49,840
Weighted Average Exercise Price Options Exercisable | $ 18.06
$18.67 to $20.90 [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise Price Range, Lower Range | $ 18.67
Exercise Price Range, Upper Range | $ 20.90
Number Outstanding (in Shares) | 67,885
Weighted Average Remaining Contractual Life | 1 year 58 days
Weighted Average Exercise Price Options Outstanding | $ 19.48
Number Exercisable (in Shares) | 67,885
Weighted Average Exercise Price Options Exercisable | $ 19.48
$21.00 to $22.00 [Member] |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise Price Range, Lower Range | $ 21.00
Exercise Price Range, Upper Range | $ 22.00
Number Outstanding (in Shares) | 28,700
Weighted Average Remaining Contractual Life | 1 year 58 days
Weighted Average Exercise Price Options Outstanding | $ 21.28
Number Exercisable (in Shares) | 28,700
Weighted Average Exercise Price Options Exercisable | $ 21.28

X
- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest. + 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + 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)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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