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Other Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2016
Stockholders' Equity Note [Abstract] |
Schedule of tax effect allocated to each component of other comprehensive income | The tax effect allocated to each component of other comprehensive income (loss) were as follows:
December 31, 2016 | Before-Tax Amount |  | Tax (Expense) Benefit |  | Net of Tax
Available-for-sale securities: |  |  |  |  |
(in thousands) |  |  |  |  |
Change in net unrealized losses during the period | $ | (7,689 | ) |  | $ | 3,074 |  |  | $ | (4,615 | )
Reclassification adjustment for net realized gain on sale included in available-for-sale securities | (926 | ) |  | 370 |  |  | (556 | )
Net unrealized losses | (8,615 | ) |  | 3,444 |  |  | (5,171 | )
Employee benefit plans: |  |  |  |  |
Net retirement plan loss | (2,787 | ) |  | 1,114 |  |  | (1,673 | )
Net retirement plan prior service credit | (188 | ) |  | 75 |  |  | (113 | )
Amortization of net retirement plan actuarial loss | 1,338 |  |  | (535 | ) |  | 803 |
Amortization of net retirement plan prior service (cost) credit | 76 |  |  | (30 | ) |  | 46 |
Employee benefit plans | (1,561 | ) |  | 624 |  |  | (937 | )
Other comprehensive loss | $ | (10,176 | ) |  | $ | 4,068 |  |  | $ | (6,108 | )
December 31, 2015 | Before-Tax Amount |  | Tax (Expense) Benefit |  | Net of Tax
Available-for-sale securities: |  |  |  |  |
(in thousands) |  |  |  |  |
Change in net unrealized gain during the period | $ | (8,241 | ) |  | $ | 3,295 |  |  | $ | (4,946 | )
Reclassification adjustment for net realized gain on sale included in available-for-sale securities | (1,108 | ) |  | 443 |  |  | (665 | )
Net unrealized losses | (9,349 | ) |  | 3,738 |  |  | (5,611 | )
Employee benefit plans: |  |  |  |  |
Net retirement plan gain | 1,846 |  |  | (738 | ) |  | 1,108 |
Amortization of net retirement plan actuarial loss | 2,218 |  |  | (887 | ) |  | 1,331 |
Amortization of net retirement plan prior service (cost) credit | (6,362 | ) |  | 2,544 |  |  | (3,818 | )
Employee benefit plans | (2,298 | ) |  | 919 |  |  | (1,379 | )
Other comprehensive loss | $ | (11,647 | ) |  | $ | 4,657 |  |  | $ | (6,990 | )
December 31, 2014 | Before-Tax Amount |  | Tax (Expense) Benefit |  | Net of Tax
Available-for-sale securities: |  |  |  |  |
(in thousands) |  |  |  |  |
Change in net unrealized loss during the period | $ | 19,094 |  |  | $ | (7,635 | ) |  | $ | 11,459 |
Reclassification adjustment for net realized gain on sale included in available-for-sale securities | (391 | ) |  | 156 |  |  | (235 | )
Net unrealized gains | 18,703 |  |  | (7,479 | ) |  | 11,224 |
Employee benefit plans: |  |  |  |  |
Net retirement plan loss | (24,211 | ) |  | 9,684 |  |  | (14,527 | )
Net retirement plan prior service credit | 6,282 |  |  | (2,513 | ) |  | 3,769 |
Amortization of net retirement plan actuarial loss | 1,065 |  |  | (426 | ) |  | 639 |
Amortization of net retirement plan prior service credit | 5 |  |  | (2 | ) |  | 3 |
Employee benefit plans | (16,859 | ) |  | 6,743 |  |  | (10,116 | )
Other comprehensive income | $ | 1,844 |  |  | $ | (736 | ) |  | $ | 1,108 |
Schedule of accumulated other comprehensive income | The following table presents the activity in our accumulated other comprehensive loss for the periods indicated:
(in thousands) | Available-for-Sale Securities |  | Employee Benefit Plans |  | Accumulated Other Comprehensive Income (loss)
Balance at January 1, 2014 | $ | (8,357 | ) |  | $ | (16,762 | ) |  | $ | (25,119 | )
Other comprehensive (loss) income | 11,224 |  |  | (10,116 | ) |  | 1,108 |
Balance at December 31, 2014 | $ | 2,867 |  |  | $ | (26,878 | ) |  | $ | (24,011 | )
Balance at January 1, 2015 | 2,867 |  |  | (26,878 | ) |  | (24,011 | )
Other comprehensive loss | (5,611 | ) |  | (1,379 | ) |  | (6,990 | )
Balance at December 31, 2015 | $ | (2,744 | ) |  | $ | (28,257 | ) |  | $ | (31,001 | )
Balance at January 1, 2016 | (2,744 | ) |  | (28,257 | ) |  | (31,001 | )
Other comprehensive loss | (5,171 | ) |  | (937 | ) |  | (6,108 | )
Balance at December 31, 2016 | $ | (7,915 | ) |  | $ | (29,194 | ) |  | $ | (37,109 | )
December 31, 2016 |  |  |
Details about Accumulated other Comprehensive Income (Loss) Components (in thousands) | Amount Reclassified from Accumulated Other Comprehensive Income 1 |  | Affected Line Item in the Statement Where Net Income is Presented
Available-for-sale securities: |  |  |
Unrealized gains and losses on available-for-sale securities | $ | 926 |  |  | Net gain on securities transactions
| (370 | ) |  | Tax expense
| 556 |  |  | Net of tax
Employee benefit plans: |  |  |
Amortization of the following 2 |  |  |
Net retirement plan actuarial loss | (1,338 | ) |  | Pension and other employee benefits
Net retirement plan prior service credit | (76 | ) |  | Pension and other employee benefits
Net retirement plan transition liability | 0 |  |  | Pension and other employee benefits
| (1,414 | ) |  | Total before tax
| 565 |  |  | Tax benefit
| (849 | ) |  | Net of tax
December 31, 2015 |  |  |
Details about Accumulated other Comprehensive Income (Loss) Components (in thousands) | Amount Reclassified from Accumulated Other Comprehensive Income 1 |  | Affected Line Item in the Statement Where Net Income is Presented
Available-for-sale securities: |  |  |
Unrealized gains and losses on available-for-sale securities | $ | 1,108 |  |  | Net gain on securities transactions
| (443 | ) |  | Tax expense
| 665 |  |  | Net of tax
Employee benefit plans: |  |  |
Amortization of the following 2 |  |  |
Net retirement plan actuarial loss | (2,218 | ) |  | Pension and other employee benefits
Net retirement plan prior service credit | 359 |  |  | Pension and other employee benefits
| (1,859 | ) |  | Total before tax
| 744 |  |  | Tax benefit
| (1,115 | ) |  | Net of tax
1 Amounts in parentheses indicate debits in income statement. 2 The accumulated other comprehensive income components are included in the computation of net periodic benefit cost (See Note 12 - “Employee Benefit Plans”).

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