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Other Comprehensive Income (Tables)
 6 Months Ended
Jun. 30, 2017
Other Comprehensive Income (Loss), Tax [Abstract]  
Change In Accumulated Other Comprehensive Income By Component, Net Of Taxes And Noncontrolling Interest
The following table presents the change in accumulated other comprehensive income by component, net of taxes and noncontrolling interests, for the six months ended June 30, 2017 and 2016.

(dollars in thousands)
Unrealized Holding Gains on Available-for-Sale Securities
 
Foreign Currency
 
Net Actuarial Pension Loss
 
Total
December 31, 2015
$
1,472,762

 
$
(72,696
)
 
$
(45,558
)
 
$
1,354,508

Other comprehensive income before reclassifications
388,273

 
2,189

 
—

 
390,462

Amounts reclassified from accumulated other comprehensive income
(23,550
)
 
—

 
857

 
(22,693
)
Total other comprehensive income
364,723

 
2,189

 
857

 
367,769

June 30, 2016
$
1,837,485

 
$
(70,507
)
 
$
(44,701
)
 
$
1,722,277

 
 
 
 
 
 
 
 
December 31, 2016
$
1,714,930

 
$
(84,406
)
 
$
(64,658
)
 
$
1,565,866

Other comprehensive income before reclassifications
350,349

 
3,491

 
—

 
353,840

Amounts reclassified from accumulated other comprehensive income
(9,391
)
 
—

 
1,618

 
(7,773
)
Total other comprehensive income
340,958

 
3,491

 
1,618

 
346,067

June 30, 2017
$
2,055,888

 
$
(80,915
)
 
$
(63,040
)
 
$
1,911,933
Summary Of Tax Expense (Benefit) Of Other Comprehensive Income
The following table summarizes the tax expense (benefit) associated with each component of other comprehensive income.

 
Quarter Ended June 30,
 
Six Months Ended June 30,
(dollars in thousands)
2017
 
2016
 
2017
 
2016
Change in net unrealized gains on investments:
 
 
 
 
 
 
 
Net holding gains arising during the period
$
93,935

 
$
71,381

 
$
168,928

 
$
187,880

Change in unrealized other-than-temporary impairment losses on fixed maturities arising during the period
—

 
9

 
—

 
(6
)
Reclassification adjustments for net gains (losses) included in net income
136

 
(2,333
)
 
(2,396
)
 
(7,810
)
Change in net unrealized gains on investments
94,071

 
69,057

 
166,532

 
180,064

Change in foreign currency translation adjustments
(466
)
 
(1,618
)
 
(503
)
 
(1,695
)
Change in net actuarial pension loss
154

 
86

 
333

 
188

Total
$
93,759

 
$
67,525

 
$
166,362

 
$
178,557
Reclassifications From Accumulated Other Comprehensive Income Into Income, By Component
The following table presents the details of amounts reclassified from accumulated other comprehensive income into income, by component.

 
Quarter Ended June 30,
 
Six Months Ended June 30,
(dollars in thousands)
2017
 
2016
 
2017
 
2016
Unrealized holding gains on available-for-sale securities:
 
 
 
 
 
 
 
Other-than-temporary impairment losses
$
(604
)
 
$
(3,675
)
 
$
(3,817
)
 
$
(12,080
)
Net realized investment gains, excluding other-than-temporary impairment losses
690

 
16,575

 
15,604

 
43,440

Total before taxes
86

 
12,900

 
11,787

 
31,360

Income taxes
136

 
(2,333
)
 
(2,396
)
 
(7,810
)
Reclassification of unrealized holding gains, net of taxes
$
222

 
$
10,567

 
$
9,391

 
$
23,550

 
 
 
 
 
 
 
 
Net actuarial pension loss:
 
 
 
 

 

Underwriting, acquisition and insurance expenses
$
(1,056
)
 
$
(480
)
 
$
(1,951
)
 
$
(1,045
)
Income taxes
154

 
86

 
333

 
188

Reclassification of net actuarial pension loss, net of taxes
$
(902
)
 
$
(394
)
 
$
(1,618
)
 
$
(857
)