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Operating Leases	12 Months Ended
Operating Leases	Dec. 31, 2015
Leases, Operating [Abstract]
Operating Leases	Operating Leases Operating lease equipment at December 31, 2015 and 2014 was $110.37 million and $74.14 million, respectively, net of accumulated depreciation of $33.63 million and $29.62 million, respectively. The minimum future lease rental payments due from clients on operating lease equipment at December 31, 2015, totaled $81.65 million, of which $22.08 million is due in 2016, $19.35 million in 2017, $16.02 million in 2018, $11.52 million in 2019, $11.01 million in 2020, and $1.67 million thereafter. Depreciation expense related to operating lease equipment for the years ended December 31, 2015, 2014 and 2013 was $18.28 million, $13.89 million and $13.06 million, respectively.