Commitments, Guarantees, and Contingencies

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments, Guarantees, and Contingencies

Commitments

Operating Leases

We have various noncancelable leases for real property and machinery and equipment. Such leases expire at various dates with, in some cases, options to extend their terms.

Minimum rentals under long-term operating leases are as follows (in thousands):



Fiscal year ending:	Real property		Machinery and equipment		Total
2019	$	9,727	$	919	$	10,646
2020	7,361		472		7,833
2021	5,264		256		5,520
2022	4,466		62		4,528
2023	3,864		34		3,898
Thereafter	8,671		—		8,671
Total	$	39,353	$	1,743	$	41,096

Certain of the leases contain provisions for rent escalation based on increases in a specified Consumer Price Index, real estate taxes and operating costs incurred by the lessor. Rent expense was approximately $10.9 million, $11.0 million and $9.8 million for the years ended December 31, 2018, 2017 and 2016, respectively.

Other

As of December 31, 2018, we had five outstanding letters of credit totaling $3.7 million, which expire in 2019 through 2022. In addition, we have three outstanding performance bonds totaling $12.4 million for contracts to be completed in 2019.