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Note 9 - Income Taxes | 6 Months Ended
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Jun. 30, 2014
Income Tax Disclosure [Abstract] |
Income Tax Disclosure [Text Block] | 9. Income Taxes For the three-month and six-month periods ended June 30, 2014 and 2013, our income tax expense and effective income tax rates were as follows (dollars in thousands):
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2014 |  |  | 2013 |  |  | 2014 |  |  | 2013 |
Income tax expense |  | $ | 876 |  |  | $ | 3,573 |  |  | $ | 1,735 |  |  | $ | 5,224 |
Effective income tax rate |  |  | 35.5 | % |  |  | 41.0 | % |  |  | 37.7 | % |  |  | 46.5 | %
We estimate our differences between taxable income or loss and recorded income or loss on an annual basis. Our tax provision for each quarter is based upon these full year projections, which are revised each reporting period. These projections incorporate estimates of permanent differences between U.S. GAAP income or loss and taxable income or loss, state income taxes and adjustments to our liability for unrecognized tax benefits to adjust our statutory Federal income tax rate of 35.0% to our effective income tax rate. For the six-month period ended June 30, 2014, these estimates increased or decreased our statutory Federal income tax rate of 35.0% to our effective income tax rate of 37.7% as follows: state income taxes added 1.7% and permanent differences between our U.S. GAAP income and taxable income added 1.2%, while adjustments to our reserve for uncertain tax positions resulted in a reduction of 0.2%. For the six-month period ended June 30, 2013, these estimates increased or decreased our statutory Federal income tax rate of 35.0% to our effective income tax rate of 46.5% as follows: an adjustment resulting from the expiration of certain unexercised stock options added 5.5%, state income taxes added 4.7% and permanent differences between our U.S. GAAP income and taxable income added 1.7%, while adjustments to our reserve for uncertain tax positions resulted in a reduction of 0.4%.

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 + Details
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