Annual report pursuant to Section 13 and 15(d)

Contingencies and Commitments Narrative (Details)

v3.7.0.1
Contingencies and Commitments Narrative (Details)
3 Months Ended 12 Months Ended
Dec. 31, 2016
USD ($)
Sep. 30, 2015
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Oct. 21, 2016
USD ($)
$ / shares
shares
Sep. 01, 2015
USD ($)
ft²
Loss Contingencies [Line Items]              
Long-term Debt $ 7,200,000   $ 7,200,000        
Operating Leases, Future Minimum Payments Due       $ 3,615,000      
Loss on Contracts   $ 1,000,000          
Operating Leases, Rent Expense     1,300,000 1,000,000 $ 743,000    
Debt Instrument, Face Amount $ 8,000,000   $ 8,000,000 0   $ 8,000,000  
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate 9.75%   9.75%        
Debt Instrument, Interest Rate, Effective Percentage 16.50%   16.50%        
Debt Instrument, Unamortized Discount $ 967,000   $ 967,000 $ 0   1,000,000  
Debt Issuance Costs, Gross           440,000  
Pledged Assets, Other, Not Separately Reported on Statement of Financial Position           $ 0.65  
Warrant shares | shares           314,286  
Warrant, exercise price | $ / shares           $ 2.80  
Warrant              
Loss Contingencies [Line Items]              
Other Expenses     $ 65,000        
Prime Rate              
Loss Contingencies [Line Items]              
Debt Instrument, Basis Spread on Variable Rate 6.00%            
Minneapolis Headquarters              
Loss Contingencies [Line Items]              
Area of Real Estate Property | ft²             17,216
Operating Leases, Future Minimum Payments Due             $ 1,800,000
Leasehold Improvements, Gross             713,000
Tenant Improvements             $ 689,000