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Leases
6 Months Ended
Jun. 30, 2014
Leases

Note 7. Leases

The Company leases certain equipment under capital leases. The economic substance of these leases is that the Company is financing the acquisition of the equipment through the leases and accordingly, the equipment is recorded as an asset and the leases are recorded as liabilities.

Operating lease commitments relate primarily to rental of the facilities and equipment under non-cancellable operating lease agreements that expire at various dates through the year 2017. Rent expense for operating leases was approximately $2.0 million and $6.6 million for the three months ended June 30, 2013 and 2014, respectively.