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Description of Business and Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2017
Description of Business and Summary of Significant Accounting Policies [Abstract]  
Accumulated Other Comprehensive Income (Loss)



 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 



 

2017

 

2016

 

2015

Total accumulated other comprehensive loss at beginning of period

 

$

 (468)

 

$

 (611)

 

$

 (348)

Unrealized losses on investments

 

 

 

 

 

 

 

 

 

Balance at beginning of period

 

$

 (21)

 

$

 (39)

 

$

 (54)

Other comprehensive income before reclassifications

 

 

 15 

 

 

 18 

 

 

 15 

Amounts reclassified from accumulated other comprehensive income (loss)
   to other income (loss)

 

 

 —

 

 

 —

 

 

 —

Balance at end of period

 

$

 (6)

 

$

 (21)

 

$

 (39)

Foreign currency translation adjustment

 

 

 

 

 

 

 

 

 

Balance at beginning of period

 

$

 (447)

 

$

 (572)

 

$

 (294)

Other comprehensive income before reclassifications

 

 

 660 

 

 

 532 

 

 

 156 

Amounts reclassified from accumulated other comprehensive income (loss)
   to other income (loss)

 

 

 (173)

 

 

 (407)

 

 

 (434)

Balance at end of period

 

$

 40 

 

$

 (447)

 

$

 (572)

Total accumulated other comprehensive income (loss) at end of period

 

$

 34 

 

$

 (468)

 

$

 (611)