|
Note 5 - Employee Benefit Plans (Detail) - Summary of benefit payments over ten years: (USD $)
|
Dec. 31, 2018
|
Dec. 31, 2017
|
Dec. 31, 2016
|
Dec. 31, 2015
|
Dec. 31, 2014
|
Dec. 31, 2013
|
|---|---|---|---|---|---|---|
| 2013 | Ìý | Ìý | Ìý | Ìý | Ìý | $ 211,413 |
| 2014 | Ìý | Ìý | Ìý | Ìý | 207,756 | Ìý |
| 2015 | Ìý | Ìý | Ìý | 204,017 | Ìý | Ìý |
| 2016 | Ìý | Ìý | 204,168 | Ìý | Ìý | Ìý |
| 2017 | Ìý | 201,076 | Ìý | Ìý | Ìý | Ìý |
| 2018 to 2022 | $ 1,270,581 | Ìý | Ìý | Ìý | Ìý | Ìý |
| X | ||||||||||
|
- Definition
Amount of benefits expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year from a defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of benefits expected to be paid in the next fiscal year following the latest fiscal year from a defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of benefits expected to be paid in the fifth fiscal year following the latest fiscal year from a defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of benefits expected to be paid in the fourth fiscal year following the latest fiscal year from a defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of benefits expected to be paid in the third fiscal year following the latest fiscal year from a defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of benefits expected to be paid in the second fiscal year following the latest fiscal year from a defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|