Comprehensive Income (Tables)
 12 Months Ended
Dec. 31, 2016
Equity [Abstract]  
Comprehensive Income
  Components of other comprehensive income (loss) for 2016, 2015 and 2014 and the related tax effect are detailed below.

 
Amounts Before Taxes
 
Tax (Expense)Benefit
 
Amounts Net of Taxes
 
(In thousands)
 
 
 
 
 
 
2016:
 
 
 
 
 
Unrealized gains on securities, net of effects of deferred costs of $11,367:
 
 
 
 
 
Net unrealized holding gains (losses) arising during the period
$
19,417

 
(6,796
)
 
12,621

Unrealized liquidity losses
57

 
(20
)
 
37

Reclassification adjustment for net gains included in net earnings
(3,315
)
 
1,160

 
(2,155
)
Amortization of net unrealized gains (losses) and related to transferred securities
—

 
—

 
—

 
 
 
 
 
 
Net unrealized gains (losses) on securities
16,159

 
(5,656
)
 
10,503

 
 
 
 
 
 
Foreign currency translation adjustments
(251
)
 
87

 
(164
)
Benefit plan liability adjustment
(178
)
 
62

 
(116
)
 
 
 
 
 
 
Other comprehensive income (loss)
$
15,730

 
(5,507
)
 
10,223


 
Amounts Before Taxes
 
Tax (Expense)Benefit
 
Amounts Net of Taxes
 
(In thousands)
 
 
 
 
 
 
2015:
 
 
 
 
 
Unrealized gains on securities, net of effects of deferred costs of $50,052:
 
 
 
 
 
Net unrealized holding gains (losses) arising during the period
$
(61,226
)
 
21,429

 
(39,797
)
Unrealized liquidity losses
1,572

 
(550
)
 
1,022

Reclassification adjustment for net gains included in net earnings
(3,207
)
 
1,122

 
(2,085
)
Amortization of net unrealized gains (losses) related to transferred securities
—

 
—

 
—

 
 
 
 
 
 
Net unrealized gains (losses) on securities
(62,861
)
 
22,001

 
(40,860
)
 
 
 
 
 
 
Foreign currency translation adjustments
215

 
(75
)
 
140

Benefit plan liability adjustment
(1,134
)
 
397

 
(737
)
 
 
 
 
 
 
Other comprehensive income (loss)
$
(63,780
)
 
22,323

 
(41,457
)

 
Amounts Before Taxes
 
Tax (Expense)Benefit
 
Amounts Net of Taxes
 
(In thousands)
 
 
 
 
 
 
2014:
 
 
 
 
 
Unrealized gains on securities, net of effects of deferred costs of $(10,927):
 
 
 
 
 
Net unrealized holding gains (losses) arising during the period
$
19,287

 
(6,751
)
 
12,536

Unrealized liquidity losses
40

 
(14
)
 
26

Reclassification adjustment for net gains included in net earnings
(7,693
)
 
2,693

 
(5,000
)
Amortization of net unrealized gains (losses) related to transferred securities
—

 
—

 
—

 
 
 
 
 
 
Net unrealized gains (losses) on securities
11,634

 
(4,072
)
 
7,562

 
 
 
 
 
 
Foreign currency translation adjustments
(913
)
 
357

 
(556
)
Benefit plan liability adjustment
(5,077
)
 
1,777

 
(3,300
)
 
 
 
 
 
 
Other comprehensive income (loss)
$
5,644

 
(1,938
)
 
3,706