Note 2 - Accumulated Other Comprehensive Income - Changes in Accumulated Other Comprehensive Income by Component (Details) - USD ($)
$ in Thousands |
12 Months Ended |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
| Balance |
$ 175,698
|
$ 172,929
|
$ 170,055
|
| Other comprehensive (loss) income |
(6,190)
|
(2,093)
|
8,087
|
| Balance |
184,066
|
175,698
|
172,929
|
| Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] |
|
|
|
| Balance |
3,219
|
5,174
|
|
| Other comprehensive (loss) income before reclassifications |
(3,983)
|
(1,844)
|
|
| Amounts reclassified from accumulated other comprehensive income |
(2,599)
|
(111)
|
|
| Other comprehensive (loss) income |
(6,582)
|
(1,955)
|
|
| Balance |
(3,363)
|
3,219
|
5,174
|
| Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |
|
|
|
| Balance |
(437)
|
(299)
|
|
| Other comprehensive (loss) income before reclassifications |
356
|
(198)
|
|
| Amounts reclassified from accumulated other comprehensive income |
36
|
60
|
|
| Other comprehensive (loss) income |
392
|
(138)
|
|
| Balance |
(45)
|
(437)
|
(299)
|
| AOCI Attributable to Parent [Member] |
|
|
|
| Balance |
2,782
|
4,875
|
(3,212)
|
| Other comprehensive (loss) income before reclassifications |
(3,627)
|
(2,042)
|
|
| Amounts reclassified from accumulated other comprehensive income |
(2,563)
|
(51)
|
|
| Other comprehensive (loss) income |
(6,190)
|
(2,093)
|
8,087
|
| Balance |
$ (3,408)
|
$ 2,782
|
$ 4,875
|