Accumulated Other Comprehensive Income (Loss) (Tables)

9 Months Ended

Sep. 30, 2018

Equity [Abstract]

Accumulated Other Comprehensive Income (Loss)

The following table summarizes the changes in accumulated other comprehensive income (loss) by component:

				Unrealized Holding Gains (Losses), Net of Tax
	Foreign Currency Translation Adjustment			On Available-For-Sale Debt Securities			On Equity Securities			On Foreign Currency Forward Contracts			Total
	(in thousands)
Balance at December 31, 2017	$	(21,031	)	$	(594	)	$	25,069		$	(15,016	)	$	(11,572	)
Other comprehensive income before reclassifications	6,800			137			—			21,102			28,039
Amounts reclassified from accumulated other comprehensive income (loss)	—			—			—			7,960			7,960
Net current period other comprehensive income	$	6,800		$	137		$	—		$	29,062		$	35,999
Amounts reclassified to accumulated deficit pursuant to adoption of new accounting standard	949			—			(25,069		)	—			(24,120		)
Balance at September 30, 2018	$	(13,282	)	$	(457	)	$	—		$	14,046		$	307

				Unrealized Holding Gains (Losses), Net of Tax
	Foreign Currency Translation Adjustment			On Available-For-Sale Debt Securities			On Equity Securities			On Foreign Currency Forward Contracts			Total
	(in thousands)
Balance at December 31, 2016	$	(7,862	)	$	(10	)	$	17,531		$	11,514		$	21,173
Other comprehensive loss before reclassifications	(11,137		)	(170		)	(7,616		)	(25,981		)	(44,904		)
Amounts reclassified from accumulated other comprehensive income (loss)	—			—			—			(1,398		)	(1,398		)
Net current period other comprehensive loss	$	(11,137	)	$	(170	)	$	(7,616	)	$	(27,379	)	$	(46,302	)
Balance at September 30, 2017	$	(18,999	)	$	(180	)	$	9,915		$	(15,865	)	$	(25,129	)