Annual report pursuant to Section 13 and 15(d)

Acquisition - Additional Information (Details)

v3.19.3.a.u2
Acquisition - Additional Information (Details)
 12 Months Ended
Dec. 30, 2017
USD ($)
Nov. 03, 2016
USD ($)
$ / Unit
Sep. 30, 2019
USD ($)
mi²
Sep. 30, 2018
USD ($)
Dec. 31, 2017
USD ($)
Business Acquisition [Line Items]          
Impairment charge of lease intangibles     $ 3,222,000 $ 0  
ApplianceSmart Inc          
Business Acquisition [Line Items]          
Business combination, total consideration paid $ 6,500,000        
Net liabilities assumed by ASH         $ (1,607,000)
Total notes payable     2,826,000 $ 3,822,000  
ApplianceSmart Inc | Intangible Leases          
Business Acquisition [Line Items]          
Acquired finite-lived intangible asset, residual value 1,206,000        
Impairment charge of lease intangibles     $ 760,000    
Present value discount rate     7.50%    
Number of mile radius of existing stores | mi²     3    
ApplianceSmart Inc | Maximum | Intangible Leases          
Business Acquisition [Line Items]          
Amortization period of intangible asset     10 years    
Percentage of square footage price difference of contracted lease rate     10.00%    
Difference in overall discounted cash flow effect of lease     $ 150,000    
ApplianceSmart Inc | Minimum | Intangible Leases          
Business Acquisition [Line Items]          
Amortization period of intangible asset     2 years    
ApplianceSmart Inc | Trade Names Intangible Asset          
Business Acquisition [Line Items]          
Acquired finite-lived intangible asset, residual value     $ 2,015,000    
Impairment charge of lease intangibles     $ 1,839,000    
Intangible asset method for fair value determination     residual method    
Residual method percentage     0.50%    
Present value discount rate     18.60%    
Amortization period of intangible asset     20 years    
ApplianceSmart Inc | Valuation, Cost Approach | Customer Lists          
Business Acquisition [Line Items]          
Estimated fair value of intangible asset acquired cost per unit of email address | $ / Unit   0.10      
Acquired finite-lived intangible asset, residual value   $ 5,000      
Acquired finite-lived intangible assets, weighted average useful life   20 years      
Impairment charge of lease intangibles     $ 4,000    
ApplianceSmart Inc | ASH          
Business Acquisition [Line Items]          
Business combination, total consideration paid 6,500,000        
Liabilities assumed by ASH $ 0        
Interest rate 5.00%        
Debt instrument payment terms     three-year    
Original amount for the balance of purchase price $ 3,919,000        
Percentage of outstanding principal amount repaid 10.00%        
Maturity date Apr. 01, 2021        
Cash paid purchase price $ 2,581,000        
Net liabilities assumed by ASH $ 1,607,000