Note 8 - Retirement Plans (Details Textual) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 50.00% | |
| Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 100.00% | |
| Defined Contribution Plan Employer Matching Contribution at Fifty Percent | 50.00% | |
| Pension and Other Postretirement Benefit Expense | $ 0.1 | $ 0.1 |
| Maximum [Member] | ||
| Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 3.00% | |
| Defined Contribution Plan Employer Matching Contribution at Fifty Percent | 5.00% | |
| Minimum [Member] | ||
| Defined Contribution Plan Employer Matching Contribution at Fifty Percent | 3.00% | |
| X | ||||||||||
- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution of fifty percent to a defined contribution plan. No definition available.
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| X | ||||||||||
- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. No definition available.
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| X | ||||||||||
- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. No definition available.
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| X | ||||||||||
- Definition The amount of pension and other (such as medical, dental and life insurance) postretirement benefit costs recognized during the period for (1) defined benefit plans (periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss) on assets, prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments) and for (2) defined contribution plans (to the extent that a plan's defined contributions to an individual's account are to be made for periods in which that individual renders services, the net cost for a period is the contribution called for in that period; if a plan calls for contributions for periods after an individual retires or terminates, the estimated cost is accrued during the employee's service period). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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