Quarterly report pursuant to Section 13 or 15(d)

Leases (Operating Lease Activity) (Details)

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Leases (Operating Lease Activity) (Details)
3 Months Ended
Sep. 01, 2015
USD ($)
ft²
Sep. 30, 2015
USD ($)
payment
Operating Leased Assets [Line Items]    
Lessee Leasing Arrangements, Operating Leases, Term of Contract 7 years 5 months  
Loss on Contracts   $ 1,000,000
Number of Remaining Lease Payments | payment   6
Operating Leases, Quarterly Rent Expense   $ 71,000
Minneapolis Headquarters    
Operating Leased Assets [Line Items]    
Area of Real Estate Property | ft² 17,216  
Operating Leases, Future Minimum Payments Due $ 1,822,000  
Leasehold Improvements, Gross 713,000  
Tenant Improvements 689,000  
Minneapolis Headquarters | Minimum    
Operating Leased Assets [Line Items]    
Operating Leases, Monthly Rent Expense 20,249  
Minneapolis Headquarters | Maximum    
Operating Leased Assets [Line Items]    
Operating Leases, Monthly Rent Expense $ 23,132