COMMITMENTS

We have entered into various operating lease agreements for office facilities and equipment, the last of which expires in fiscal 2020. The office facility leases generally require us to pay a pro-rata share of the lessor’s operating expenses. Certain operating leases contain escalation clauses and are being amortized on a straight-line basis over the term of the lease.

The following schedule reflects future minimum rental commitments under noncancelable operating leases (in thousands):



Fiscal year	Amount
2017	$	1,706
2018	958
2019	800
2020	388
2021	70
Thereafter	—
Total minimum payments required	$	3,922

The following schedule shows the composition of total rental expense for all operating leases for the years ended September 30 (in thousands):



	Fiscal years ended September 30,
	2016			2015			2014
Rentals	$	1,613		$	2,076		$	2,606
Less: sublease rentals	(46		)	(56		)	(24		)
Total rental expense	$	1,567		$	2,020		$	2,582