Note 16 - Pension and Postretirement Benefit Plans - Changes in Benefit Obligations and Plan Assets (Details) - USD ($)
$ in Thousands |
12 Months Ended |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
| QDBP [Member] |
|
|
|
| Benefit obligation |
$ 169
|
$ 44,092
|
|
| Service cost |
|
|
|
| Interest cost |
|
1,589
|
1,640
|
| Plan participants contribution |
|
|
|
| Actuarial loss (gain) |
|
(2,978)
|
|
| Settlements |
|
(40,625)
|
|
| Benefits paid |
(169)
|
(1,909)
|
|
| Benefit obligation |
|
169
|
44,092
|
| Fair value of plan assets |
169
|
43,874
|
|
| Actual return on plan assets |
|
1,140
|
|
| Settlements |
|
(40,625)
|
|
| Excess assets transferred to defined contribution plan |
|
(2,311)
|
|
| Employer contribution |
|
|
|
| Benefits paid |
(169)
|
(1,909)
|
|
| Fair value of plan assets |
|
169
|
43,874
|
| Funded status at year end (plan assets less benefit obligations) |
|
|
|
| Prepaid benefit cost/(accrued liability) |
|
|
|
| Net actuarial loss |
|
|
|
| Net included in Other Liabilities in the Consolidated Balance Sheets |
|
|
|
| SERP I and SERP II [Member] |
|
|
|
| Benefit obligation |
4,830
|
5,079
|
|
| Service cost |
|
|
61
|
| Interest cost |
184
|
184
|
177
|
| Plan participants contribution |
|
|
|
| Actuarial loss (gain) |
32
|
(178)
|
|
| Settlements |
|
|
|
| Benefits paid |
(260)
|
(255)
|
|
| Benefit obligation |
4,786
|
4,830
|
5,079
|
| Fair value of plan assets |
|
|
|
| Actual return on plan assets |
|
|
|
| Settlements |
|
|
|
| Excess assets transferred to defined contribution plan |
|
|
|
| Employer contribution |
260
|
254
|
|
| Benefits paid |
(260)
|
(255)
|
|
| Fair value of plan assets |
|
|
|
| Funded status at year end (plan assets less benefit obligations) |
(4,786)
|
(4,830)
|
|
| Prepaid benefit cost/(accrued liability) |
(3,248)
|
(3,266)
|
|
| Net actuarial loss |
(1,539)
|
(1,564)
|
|
| Net included in Other Liabilities in the Consolidated Balance Sheets |
(4,786)
|
(4,830)
|
|
| PRBP [Member] |
|
|
|
| Benefit obligation |
493
|
540
|
|
| Service cost |
|
|
|
| Interest cost |
17
|
18
|
29
|
| Plan participants contribution |
49
|
46
|
|
| Actuarial loss (gain) |
(6)
|
27
|
|
| Settlements |
|
|
|
| Benefits paid |
(135)
|
(138)
|
|
| Benefit obligation |
418
|
493
|
540
|
| Fair value of plan assets |
|
|
|
| Actual return on plan assets |
|
|
|
| Settlements |
|
|
|
| Excess assets transferred to defined contribution plan |
|
|
|
| Employer contribution |
86
|
92
|
|
| Benefits paid |
(135)
|
(138)
|
|
| Fair value of plan assets |
|
|
|
| Funded status at year end (plan assets less benefit obligations) |
(418)
|
(493)
|
|
| Prepaid benefit cost/(accrued liability) |
(170)
|
(197)
|
|
| Net actuarial loss |
(248)
|
(296)
|
|
| Net included in Other Liabilities in the Consolidated Balance Sheets |
$ (418)
|
$ (493)
|
|