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COMMITMENTS AND CONTINGENCIES
 6 Months Ended
Jun. 30, 2013
Commitments and Contingencies Disclosure [Abstract]  
Commitments and Contingencies Disclosure
COMMITMENTS AND CONTINGENCIES
From time to time we are subject to claims of various amounts, which arise out of the normal course of business. In the opinion of management, the disposition of pending claims will not have a material adverse effect on our financial position, results of operations or cash flows.
We lease certain equipment, vehicles and operating facilities under non-cancellable operating leases that expire on various dates through 2022. The future minimum lease payments required under these leases are approximately $0.5 million for the remainder of 2013, $1.0 million in 2014, $1.0 million in 2015, $0.9 million in 2016, $0.8 million in 2017 and $1.3 million thereafter. Rent expense for each of the six months ended June 30, 2013 and 2012 was $0.6 million and $0.5 million, respectively. At June 30, 2013, firm commitments to vendors totaled $2.1 million.