Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Schedule of Minimum Future Rental Revenues on Operating Leases

Future minimum lease payments under noncancellable operating leases, including build-to-suit leases, and future minimum sublease receipts, for each of the next five years and thereafter as of December 31, 2018 are as follows (in thousands):

Fiscal Year	Future Minimum Lease Payments		Future Minimum Sublease Receipts
2019	$	6,559	$	351
2020	6,216		60
2021	4,355		—
2022	2,582		—
2023	1,423		—
Thereafter	24,180		—
Total	$	45,315	$	411

Changes in Product Warranty Reserve

The changes in product warranty reserve were as follows (in thousands):

	Year Ended December 31,
	2018			2017
Balance at January 1,	$	16,335		$	10,319
Liability assumed upon acquiring FFPS	—			10,362
Provisions, net of releases	10,548			13,487
Settlements	(14,109		)	(17,833		)
Balance at December 31,	$	12,774		$	16,335