(18) Commitments

We lease buildings, motor vehicles and office equipment under operating leases. We expense rental charges for operating leases on a straight-line basis over the lease term taking into account rent concessions or holidays. Rent expenses under operating leases for the years ended June 30, 2018, 2017 and 2016, were approximately $21.1 million, $20.1 million and $17.4 million, respectively. At June 30, 2018 we had the following future minimum lease payments under non-cancelable operating leases (in thousands):


Fiscal Years	Operating Leases
2019	$	18,343
2020		12,585
2021		8,382
2022		5,929
2023		4,686
Thereafter		7,539
Total minimum lease payments	$	57,464