Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2018

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

Changes in components of accumulated other comprehensive loss (in thousands):

		Years Ended December 31,
		2018			2017			2016
Investments
	Accumulated other comprehensive income (loss), beginning of period	$	2		$	(6	)	$	1,297
	Unrealized gains (losses), net of tax effects of $18, $4, and $10	17			8			1,647
	Reclassification adjustments for losses (gains) included in other income (expense), net of tax effects of $0, $0, and $0	—			—			(2,950		)
	Net current period other comprehensive income (loss)	17			8			(1,303		)
	Accumulated other comprehensive income (loss) balance, end of period	$	19		$	2		$	(6	)
Foreign currency translation
	Accumulated other comprehensive loss, beginning of period	$	(59,549	)	$	(61,639	)	$	(60,777	)
	Translation adjustments	(1,588		)	2,090			(1,134		)
	Reclassification adjustments for losses (gains) included in other income (expense)	—			—			272
	Net current period other comprehensive income (loss)	(1,588		)	2,090			(862		)
	Accumulated other comprehensive loss balance, end of period	$	(61,137	)	$	(59,549	)	$	(61,639	)

Total accumulated other comprehensive loss, end of period $ (61,118 ) $ (59,547 ) $ (61,645 )