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Commitments
3 Months Ended
Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]  
Commitments Disclosure [Text Block]
12. 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 March 31, 2014:
Remaining 2014
$
32

2015
5

2016
5

2017
5

2018
5

2019 and thereafter
37

 
$
89


Total rental expense was $0.1 million and $0.02 million for the three months ended March 31, 2014 and 2013, respectively.