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Rental Equipment	9 Months Ended
Rental Equipment	Sep. 30, 2017
Property, Plant and Equipment [Abstract]
Rental Equipment	Rental Equipment Rental equipment is shown net of accumulated depreciation of $12,173,000 and $10,430,000 at September 30, 2017 and December 31, 2016, respectively. The Company recognized depreciation expense of $1,449,000 and $1,508,000 for the three months ended September 30, 2017 and September 30, 2016, respectively and $4,253,000 and $4,951,000 for the nine months ended September 30, 2017 and September 30, 2016, respectively.