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Note 9 - 401(k) Profit Sharing, Deferred Compensation and Long-term Incentive Plans (Tables) | 12 Months Ended
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Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract] |
Schedule of Costs of Retirement Plans [Table Text Block] |
|  | Year Ended December 31, |
|  | 2013 |  |  | 2012 |  |  | 2011 |
Compensation expense (millions) |  | $ | 1.4 |  |  | $ | 1.2 |  |  | $ | 0.9 |
Total discretionary contribution (millions) |  | $ | 2.1 |  |  | $ | 1.9 |  |  | $ | 1.3 |
Guaranteed annual return |  |  | 5.25 | % |  |  | 5.90 | % |  |  | 6.00 | %

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- Definition Tabular disclosure of the costs related to the various types of retirement plans including defined benefit pension plan cost, defined contribution plan cost, other postretirement benefit plan cost, and net periodic benefit cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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