Commitments

The Company leases some of its primary facilities under various operating leases that expire in 2019 through 2028. The Company also leases certain operating machinery and equipment and office equipment under operating lease agreements. Total net rent expense for the years ended December 31, 2018, 2017 and 2016 amounted to $13.3 million, $13.9 million and $9.0 million, respectively.

The future minimum obligations under all non-cancelable leases and other contractual obligations are as follows (in thousands):



	Net Operating Leases		Other Contractual Obligations
2019	$	10,561	$	1,528
2020	8,270		—
2021	7,283		—
2022	4,894		—
2023	2,934		—
Thereafter	5,911		—
Total minimum payments	$	39,853	$	1,528