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Note 7 - Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2012
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] |
|  | For the Year Ended December 31, |
|  | 2012 |  |  | 2011 |  |  | 2010 |
Stock options |  | $ | (66) |  |  | $ | 2,077 |  |  | $ | 4,170 |
Restricted stock units |  |  | 1,314 |  |  |  | 672 |  |  |  | 9 |
Deferred directors fees |  |  | 58 |  |  |  | 61 |  |  |  | 95 |
Total stock-based compensation expense |  |  | 1,306 |  |  |  | 2,810 |  |  |  | 4,274 |
Tax benefit of stock-based compensation expense |  |  | (472) |  |  |  | (959) |  |  |  | (1,412) |
After-tax effect of stock based compensation |  | $ | 834 |  |  | $ | 1,851 |  |  | $ | 2,862 |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Method Used |
|  | 2012 |  | 2011 |  | 2010
Expected dividend yield |  |  | 0.00 | % |  |  | 0.00 | % |  |  | 0.00 | %
Risk-free interest rate |  |  | 0.67 | % |  |  | 1.80 | % |  |  | 1.74 | %
Expected volatility |  |  | 58.6 | % |  |  | 57.2 | % |  |  | 67.7 | %
Expected life of option (years) |  |  | 4.8 |  |  |  | 5.0 |  |  |  | 5.5 |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  | 2012 |  |  | 2011 |  |  | 2010 |
|  | Number of Options |  |  | Weighted- Average Exercise Price |  |  | Number of Options |  |  | Weighted- Average Exercise Price |  |  | Number of Options |  |  | Weighted- Average Exercise Price |
Outstanding at beginning of year |  |  | 1,902,000 |  |  | $ | 11.51 |  |  |  | 2,856,125 |  |  | $ | 14.68 |  |  |  | 3,051,125 |  |  | $ | 15.28 |
Granted |  |  | 70,000 |  |  |  | 3.55 |  |  |  | 60,000 |  |  |  | 8.16 |  |  |  | 110,000 |  |  |  | 5.71 |
Exchanged for RSUs |  |  | - |  |  |  | - |  |  |  | (814,500 | ) |  |  | 22.06 |  |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |  |  |  | (81,500 | ) |  |  | 4.61 |  |  |  | (1,500 | ) |  |  | 6.35 |
Expired or forfeited |  |  | (58,000 | ) |  |  | 6.33 |  |  |  | (118,125 | ) |  |  | 18.48 |  |  |  | (303,500 | ) |  |  | 17.51 |
Outstanding at end of year |  |  | 1,914,000 |  |  | $ | 11.38 |  |  |  | 1,902,000 |  |  | $ | 11.51 |  |  |  | 2,856,125 |  |  | $ | 14.68 |
Exercisable at end of year |  |  | 1,833,500 |  |  | $ | 11.48 |  |  |  | 1,718,062 |  |  | $ | 11.72 |  |  |  | 2,277,625 |  |  | $ | 14.98 |
Weighted-average fair value of options granted during the year |  |  |  |  |  | $ | 1.72 |  |  |  |  |  |  | $ | 4.08 |  |  |  |  |  |  | $ | 3.38 |
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] |
Options Outstanding |  |  | Options Exercisable |
Range of Exercise Prices |  |  | Number of Options |  |  | Weighted-Average Remaining Contractual Life (years) |  |  | Weighted- Average Exercise Price |  |  | Number of Options |  |  | Weighted-Average Exercise Price |
$2.76 | - | $5.51 |  |  |  | 479,000 |  |  |  | 3.4 |  |  | $ | 4.36 |  |  |  | 479,000 |  |  | $ | 4.36 |
$5.52 | - | $11.03 |  |  |  | 825,875 |  |  |  | 5.0 |  |  |  | 8.88 |  |  |  | 745,375 |  |  |  | 8.85 |
$11.04 | - | $22.06 |  |  |  | 272,250 |  |  |  | 3.2 |  |  |  | 14.63 |  |  |  | 272,250 |  |  |  | 14.63 |
$22.07 | - | $27.57 |  |  |  | 336,875 |  |  |  | 4.1 |  |  |  | 24.86 |  |  |  | 336,875 |  |  |  | 24.86 |
$2.76 | - | $27.57 |  |  |  | 1,914,000 |  |  |  | 4.2 |  |  | $ | 11.38 |  |  |  | 1,833,500 |  |  | $ | 11.48 |
Schedule of Nonvested Share Activity [Table Text Block] |
|  | Non-Vested Stock Options Outstanding |  |  | Weighted-Average Grant Date Fair Value |
Outstanding on January 1, 2012 |  |  | 183,938 |  |  | $ | 5.56 |
Granted |  |  | 70,000 |  |  |  | 1.72 |
Vested |  |  | (172,688 | ) |  |  | 3.70 |
Exchanged for RSUs |  |  | - |  |  |  | - |
Forfeited |  |  | (750 | ) |  |  | 5.18 |
Outstanding on December 31, 2012 |  |  | 80,500 |  |  |  | 5.35 |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
|  | Shares |  |  | Weighted Average Grant Date Fair Value |
Unvested restricted stock units at January 1, 2010 |  |  | - |  |  | $ | 0.00 |
Granted |  |  | 149,000 |  |  |  | 8.63 |
Unvested restricted units at December 31, 2010 |  |  | 149,000 |  |  |  | 8.63 |
Granted |  |  | 80,000 |  |  |  | 9.14 |
Converted from stock options |  |  | 267,372 |  |  |  | 6.53 |
Forfeited |  |  | (9,207 | ) |  |  | 6.76 |
Vested |  |  | - |  |  |  | - |
Unvested restricted stock units at December 31, 2011 |  |  | 487,165 |  |  |  | 7.59 |
Granted |  |  | 349,000 |  |  |  | 4.82 |
Forfeited |  |  | (11,891 | ) |  |  | 7.15 |
Vested |  |  | (72,250 | ) |  |  | 8.63 |
Unvested restricted stock units at December 31, 2012 |  |  | 752,024 |  |  |  | 6.21 |
Additional Information [Member] |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  | Number of Options |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Term |  |  | Aggregate Intrinsic Value |
Outstanding on January 1, 2012 |  |  | 1,902,000 |  |  |  | 11.51 |  |  |  |  |  |  |
Granted |  |  | 70,000 |  |  |  | 3.55 |  |  |  |  |  |  |
Exercised |  |  | - |  |  |  |  |  |  |  |  |  |  |
Expired or forfeited |  |  | (58,000 | ) |  |  | 6.33 |  |  |  |  |  |  |
Outstanding on December 31, 2012 |  |  | 1,914,000 |  |  |  | 11.38 |  |  |  | 4.20 |  |  | $ | 85 |
Exercisable on December 31, 2012 |  |  | 1,833,500 |  |  |  | 11.48 |  |  |  | 4.09 |  |  | $ | 85 |

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph g(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809 + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition For each plan, identification of the award pricing model or other valuation method used in calculating the weighted average fair values disclosed. The model is also used to calculate the compensation expense that is shown within the balance sheet, income statement, and cash flow. Examples of valuation techniques are lattice models (binomial model), closed-form models (Black-Scholes-Merton formula), and a Monte Carlo simulation technique. Fair value is the amount at which an asset or liability could be bought or incurred or sold or settled in a current transaction between willing parties, that is, other than in a forced or liquidation sale. May include disclosures about the assumptions underlying application of the method selected. + 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 (f)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph e(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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