Commitments

We have commitments under various operating leases with initial terms greater than one year for machinery and facilities. These leases have terms that will expire on various dates through 2025. We expect that in the normal course of business, these leases will be renewed or replaced by other leases. Certain of our lease agreements provide for the fair value purchase of the leased asset at the end of the lease. Rent expense for operating leases that provide for periodic rent escalations or rent holidays over the term of the lease is recognized on a straight-line basis.

The following table presents our annual minimum rental payments under non-cancelable operating leases that have lease terms of one year or more (in thousands) as of September 30, 2013:



2013	$	12
2014	21
2015	5
2016	5
2017	5
2018 and thereafter	42
	$	90

Total rental expense was $0.01 million, $0.04 million, $0.01 million, and $0.04 million for the three and nine months ended September 30, 2013 and 2012, respectively.