Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Commitments And Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

Operating leases – We lease offices, manufacturing plants, equipment, vehicles and warehouses under operating lease agreements expiring through December 2028. Rental expense amounted to approximately $10.3 million, $10.4 million and $10.5 million for the years ended December 31, 2018, 2017 and 2016, respectively.  We do not have purchase options related to the operating lease agreements. The table below sets forth the approximate amount for future minimum lease payments under non-cancelable operating leases at December 31, 2018:

2019	$	10,988
2020		10,141
2021		6,778
2022		5,650
2023		3,534
Thereafter		4,452
	$	41,543

The table below sets forth the approximate amount of future minimum lease payments due under the non-lease portion of our operating leases at December 31, 2018:

2019	$	2,555
2020		2,550
2021		1,860
2022		1,728
2023		1,426
Thereafter		2,946
	$	13,065

Summary of Land Right Leases

In addition, we have the following land right leases.    None of the leases requires a rental payment.

Location	Term (years)	Expiration Date
Chengdu, China	50	2061
Shanghai, China	50	2056
Shandong, China	50	2058
Shanghai, China	50	2058
Yangzhou, China	50	2065