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Accumulated Other Comprehensive Income (Loss)
 12 Months Ended
Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss)
Other comprehensive income (loss) consists of net income and other gains and losses affecting shareholders’ equity that are excluded from net income. Other comprehensive income (loss) includes unrealized gains and losses on available for sale securities and foreign currency translation adjustments. The Company presents other comprehensive income (loss) in its Consolidated Statements of Comprehensive Income. Components of Accumulated other comprehensive income (loss), net of tax, consisted of:
 
 
Foreign
Currency
Translation
Adjustments
 
Unrealized
Holding
Gains (Losses)
on Investments
 
Accumulated
Other
Comprehensive
Income (Loss)
Balance, January 1, 2015
 
$
(10,088
)
 
$
1,193

 
$
(8,895
)
 
 
 
 
 
 
 
Other comprehensive loss before reclassifications
 
(14,900
)
 
(1,659
)
 
(16,559
)
Amounts reclassified from accumulated other comprehensive loss
 
—

 
164

 
164

Net current-period other comprehensive loss
 
(14,900
)
 
(1,495
)
 
(16,395
)
 
 
 
 
 
 
 
Balance, December 31, 2015
 
$
(24,988
)
 
$
(302
)
 
$
(25,290
)
 
 
 
 
 
 
 
Other comprehensive loss before reclassifications
 
(12,131
)
 
(918
)
 
(13,049
)
Amounts reclassified from accumulated other comprehensive loss
 
—

 
384

 
384

Net current-period other comprehensive loss
 
(12,131
)
 
(534
)
 
(12,665
)
 
 
 
 
 
 
 
Balance, December 31, 2016
 
$
(37,119
)
 
$
(836
)
 
$
(37,955
)
 
 
 
 
 
 
 
Other comprehensive gain before reclassifications
 
17,597

 
190

 
17,787

Amounts reclassified from accumulated other comprehensive loss
 
—

 
260

 
260

Net current-period other comprehensive gain
 
17,597

 
450

 
18,047

 
 
 
 
 
 
 
Balance, December 31, 2017
 
$
(19,522
)
 
$
(386
)
 
$
(19,908
)