| **Note 1 - Basis of Presentation (Tables)**                          | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
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| **Disclosure Text Block [Abstract]**                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | ** **** **
**Three Months**
** **** **** **
**Ended March 31,**
** **** **** **
**2014******
** **** **
**2013******
** **
Weighted average shares which are not includedin the calculation of diluted earnings (loss)per share because their impact is anti-dilutive:
                                                                                                                                                        
Stock options
                                                1,189                                                                           3,003                           
Restricted stock units
                                                -                                                                           120                    |

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| - Details**Name:**us-gaap_DisclosureTextBlockAbstract**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |
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| - Definition
Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257
+ Details**Name:**us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock**Namespace Prefix:**us-gaap_**Data Type:**nonnum:textBlockItemType**Balance Type:**na**Period Type:**duration |