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Note 8 - Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2014
Income Tax Disclosure [Abstract] |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
Years ended December 31, |  | 2014 |  |  | 2013 |  |  | 2012 |
Current: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  | $ | (8,646,000 | ) |  | $ | 3,524,000 |  |  | $ | 5,503,000 |
Prior year over accrual |  |  | 44,000 |  |  |  | --- |  |  |  | --- |
State |  |  | 6,000 |  |  |  | --- |  |  |  | --- |
Deferred: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  | (3,877,000 | ) |  |  | (107,000 | ) |  |  | 11,000 |
|  | $ | (12,473,000 | ) |  | $ | 3,417,000 |  |  | $ | 5,514,000 |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
December 31, |  | 2014 |  |  | 2013 |  |  | 2012 |
Taxes computed at the federal statutory rate |  | $ | (12,812,000 | ) |  | $ | 3,792,000 |  |  | $ | 5,701,000 |
State income tax, net |  |  | 4,000 |  |  |  | -- |  |  |  | --- |
Prior year true-up |  |  | 44,000 |  |  |  | 190,000 |  |  |  | 47,000 |
Research and development tax credit |  |  | (140,000 | ) |  |  | --- |  |  |  | --- |
Reduction in domestic production activity |  |  | 893,000 |  |  |  | --- |  |  |  | --- |
AMT credit carryforward |  |  | (584,000 | ) |  |  | --- |  |  |  | --- |
Permanent differences |  |  | 122,000 |  |  |  | (565,000 | ) |  |  | (234,000 | )
Provision for (benefit from) income taxes |  | $ | (12,473,000 | ) |  | $ | 3,417,000 |  |  | $ | 5,514,000 |
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
Deferred Tax Assets: |  | 2014 |  |  | 2013 |
Revenue recognition |  | $ | 560,000 |  |  | $ | 408,000 |
Interest rate swap |  |  | 5,000 |  |  |  | --- |
Allowance for doubtful accounts |  |  | 9,000 |  |  |  | 9,000 |
Credit carryforwards |  |  | 1,134,000 |  |  |  | --- |
Deferred tax asset-current |  |  | 1,708,000 |  |  |  | 417,000 |
Deferred rent |  |  | 197,000 |  |  |  | 191,000 |
Stock options |  |  | 827,000 |  |  |  | 931,000 |
Interest rate swap |  |  | --- |  |  |  | 11,000 |
Net operating loss carryforward |  |  | 2,567,000 |  |  |  | --- |
Deferred Tax Assets-non current |  |  | 3,591,000 |  |  |  | 1,133,000 |
Deferred Tax Liabilities: |  |  |  |  |  |  |  |
Prepaid expenses |  |  | 128,000 |  |  |  | 89,000 |
Deferred Tax Liabilities-current |  |  | 128,000 |  |  |  | 89,000 |
Property and equipment |  |  | 622,000 |  |  |  | 788,000 |
Deferred tax liability-noncurrent |  |  | 622,000 |  |  |  | 788,000 |
Net Deferred Tax Assets (Liabilities) |  | $ | 4,549,000 |  |  | $ | 673,000 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: 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 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: 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 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
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