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Note 11 - Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2014
Income Tax Disclosure [Abstract] |
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] |
|  | 2013 |
|  | (in thousands) |
Balance at beginning of year |  | $ | 248 |
Settlement adjustments for tax provisions of prior years |  |  | (220 | )
Expiration of statutes of limitations |  |  | (28 | )
Balance at end of year |  | $ | - |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
|  | 2014 |  |  | 2013 |
|  | (in thousands) |
Federal income tax expense (benefit) at statutory rate |  | $ | 6,172 |  |  | $ | (1,061 | )
Adjusted for: |  |  |  |  |  |  |  |
Valuation allowance |  |  | (6,170 | ) |  |  | 1,034 |
Permanent differences and other |  |  | (2 | ) |  |  | 27 |
Income tax benefit - continuing operations |  | $ | - |  |  | $ | - |
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | 2014 |  |  | 2013 |
|  | (in thousands) |
Net operating loss and tax credit carryforwards |  | $ | 50,361 |  |  | $ | 46,205 |
Joint venture and other investments |  |  | 238 |  |  |  | 294 |
Accrued retirement benefits |  |  | 2,550 |  |  |  | 7,458 |
Property net book value |  |  | 2,715 |  |  |  | 2,825 |
Deferred revenue |  |  | 1,160 |  |  |  | 1,522 |
Stock compensation |  |  | 154 |  |  |  | 150 |
Reserves and other |  |  | 447 |  |  |  | 671 |
Total deferred tax assets |  |  | 57,625 |  |  |  | 59,125 |
Valuation allowance |  |  | (57,625 | ) |  |  | (59,125 | )
Net deferred tax assets |  | $ | - |  |  | $ | - |

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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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- Definition Tabular disclosure of the change in unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 55 -Paragraph 217 -URI http://asc.fasb.org/extlink&oid=32707879&loc=d3e36027-109320 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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