Note 8 - Retirement Plans - Estimated Rate of Increase in Compensation Levels (Details) |
12 Months Ended | |
---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
|
Weighted-average assumptions used to determine net periodic benefit cost for the Gray pension plan: | ||
Discount rate | 4.31% | 4.00% |
Expected long-term rate of return on pension plan assets | 7.00% | 7.00% |
Estimated rate of increase in compensation levels | 5.63% | |
Weighted-average assumptions used to determine benefit obligations: | ||
Discount rate | 4.11% | 4.31% |