Operations Held for Sale (Details) - USD ($)
3 Months Ended 12 Months Ended
Sep. 30, 2016
Jul. 02, 2015
Sep. 30, 2016
Dec. 31, 2016
Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Liabilities sold       $ 0 $ 5,935,000
Garden City Medical Inc [Member]          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Proceeds from sale of business $ 13,829,000        
Proceeds from sale of Business, net 12,729,000        
Operations Held For Sale, Costs Incurred During the Period     $ (1,100,000)    
Operations Held for Sale, Payment of Sale Costs       230,000  
Trade receivables, net 4,526,000   4,526,000   5,040,000
Inventories, net 5,335,000   5,335,000   6,404,000
Other current assets 74,000   74,000   27,000
Property and equipment, net 149,000   149,000   178,000
Assets sold 10,084,000   10,084,000   11,649,000
Accounts payable 2,990,000   2,990,000   2,037,000
Accrued expenses 1,751,000   1,751,000   3,464,000
Current taxes payable 0   0   434,000
Liabilities sold 4,741,000   4,741,000   $ 5,935,000
Value of current inventory sold $ 2,400,000   2,400,000    
Rentals Businesses [Member]          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Proceeds from sale of business   $ 15,500,000      
Proceeds from sale of Business, net   $ 13,700,000      
Gain on sale of businesses (pre-tax)     $ 24,000    
Operations Held For Sale, Costs Incurred During the Period       (1,792,000)  
Operations Held for Sale, Payment of Sale Costs       $ 1,265,000