Accumulated Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Accumulated Other Comprehensive Income (Loss)

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

				Unrealized Holding Gains (Losses), Net of Tax
	Foreign Currency Translation Adjustment			On Available-For-Sale Debt Securities			On Foreign Currency Forward Contracts			Total
	(in thousands)
Balance at December 31, 2018	$	(11,227	)	$	(536	)	$	12,422		$	659
Other comprehensive income before reclassifications	4,967			596			5,126			10,689
Amounts reclassified from accumulated other comprehensive income	—			—			(5,348		)	(5,348		)
Net current period other comprehensive income (loss)	4,967			596			(222		)	5,341
Balance at March 31, 2019	$	(6,260	)	$	60		$	12,200		$	6,000

				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 loss before reclassifications	(2,729		)	(460		)	—			(7,639		)	(10,828		)
Amounts reclassified from accumulated other comprehensive income (loss)	—			—			—			6,777			6,777
Net current period other comprehensive loss	(2,729		)	(460		)	—			(862		)	(4,051		)
Amounts reclassified to accumulated deficit pursuant to adoption of new accounting standard	949			—			(25,069		)	—			(24,120		)
Balance at March 31, 2018	$	(22,811	)	$	(1,054	)	$	—		$	(15,878	)	$	(39,743	)