Annual report pursuant to section 13 and 15(d)

Medical Equipment (Details Textual)

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Medical Equipment (Details Textual) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Medical Equipment (Textual) [Abstract]    
Pump equipment $ 6.3 $ 7.4
Depreciation expense included in accumulated depreciation 3.0 2.2
Depreciation expense related to medical equipment $ 5.2 $ 5.9