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Accumulated Other Comprehensive Income (Loss) (Tables)
 6 Months Ended
Jun. 30, 2018
Equity [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss) The following tables set forth the changes in accumulated other comprehensive income (loss), net of tax (in thousands) for the periods presented:
 
Unrealized Gain (Loss) on Available-for-Sale Securities
 
Gain on Derivative Securities
 
Foreign Currency Translation Adjustments
 
Accumulated Other Comprehensive Loss
Balance, April 1, 2018
$
(101
)
 
$
360

 
$
(528
)
 
$
(269
)
Current period other comprehensive income (loss)
before reclassifications
34

 
54

 
(338
)
 
(250
)
Reclassification of amounts to earnings
—

 
(42
)
 
—

 
(42
)
Net other comprehensive income (loss) during period
34

 
12

 
(338
)
 
(292
)
Balance, June 30, 2018
$
(67
)
 
$
372

 
$
(866
)
 
$
(561
)
 
Unrealized Loss on Available-for-Sale Securities
 
Gain on Derivative Securities
 
Foreign Currency Translation Adjustments
 
Accumulated Other Comprehensive Loss
Balance, January 1, 2018
$
(64
)
 
$
216

 
$
(411
)
 
$
(259
)
Current period other comprehensive income (loss) before reclassifications
(3
)
 
214

 
(455
)
 
(244
)
Reclassification of amounts to earnings
—

 
(58
)
 
—

 
(58
)
Net other comprehensive income (loss) during period
(3
)
 
156

 
(455
)
 
(302
)
Balance, June 30, 2018
$
(67
)
 
$
372

 
$
(866
)
 
$
(561
)
 
Unrealized Loss on Available-for-Sale Securities
 
Gain (Loss) on Derivative Securities
 
Foreign Currency Translation Adjustments
 
Accumulated Other Comprehensive Income (Loss)
Balance, April 1, 2017
$
(27
)
 
$
95

 
$
(1,114
)
 
$
(1,046
)
Current period other comprehensive income (loss) before reclassifications
(9
)
 
(53
)
 
330

 
268

Reclassification of amounts to earnings
—

 
41

 
—

 
41

Net other comprehensive income (loss) during period
(9
)
 
(12
)
 
330

 
309

Balance, June 30, 2017
$
(36
)
 
$
83

 
$
(784
)
 
$
(737
)
 
Unrealized Loss on Available-for-Sale Securities
 
Gain (Loss) on Derivative Securities
 
Foreign Currency Translation Adjustments
 
Accumulated Other Comprehensive Income (Loss)
Balance, January 1, 2017
$
(8
)
 
$
(24
)
 
$
(1,185
)
 
$
(1,217
)
Current period other comprehensive income (loss) before reclassifications
(28
)
 
(2
)
 
401

 
371

Reclassification of amounts to earnings
—

 
109

 
—

 
109

Net other comprehensive income (loss) during period
(28
)
 
107

 
401

 
480

Balance, June 30, 2017
$
(36
)
 
$
83

 
$
(784
)
 
$
(737
)