Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Leases (Details)

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Commitments and Contingencies - Leases (Details)
$ in Thousands
12 Months Ended
Nov. 19, 2018
USD ($)
ft²
Oct. 26, 2018
ft²
Sep. 20, 2018
USD ($)
ft²
Dec. 31, 2019
USD ($)
ft²
Nov. 21, 2018
ft²
Jul. 31, 2018
ft²
Jan. 23, 2017
ft²
Feb. 06, 2007
ft²
Commitments and Contingencies                
Size of building space | ft²           70,000    
SNH                
Commitments and Contingencies                
Size of building space | ft²       20,000       19,000
Additional leased office space in square feet | ft²             1,400  
SNH | Second Expansion Lease [Member]                
Commitments and Contingencies                
Additional leased office space in square feet | ft² 2,800              
SNH | Third Expansion Lease [Member]                
Commitments and Contingencies                
Additional leased office space in square feet | ft² 2,000              
SNH | Minimum                
Commitments and Contingencies                
Annual lease expense       $ 353        
SNH | Minimum | Second Expansion Lease [Member]                
Commitments and Contingencies                
Annual lease expense $ 45              
SNH | Minimum | Third Expansion Lease [Member]                
Commitments and Contingencies                
Annual lease expense 37              
SNH | Maximum                
Commitments and Contingencies                
Annual lease expense       $ 363        
SNH | Maximum | Second Expansion Lease [Member]                
Commitments and Contingencies                
Annual lease expense 46              
SNH | Maximum | Third Expansion Lease [Member]                
Commitments and Contingencies                
Annual lease expense $ 35              
Ja-Cole                
Commitments and Contingencies                
Size of building space | ft²       12,500        
Additional leased office space in square feet | ft²         2,500      
Ja-Cole | Minimum                
Commitments and Contingencies                
Annual lease expense       $ 113        
Ja-Cole | Maximum                
Commitments and Contingencies                
Annual lease expense       116        
Ashley Avenue Lease                
Commitments and Contingencies                
Size of building space | ft²   15,000            
Right to early termination of lease   18 months            
Notice period for termination of contract   4 months            
Ashley Avenue Lease | Minimum                
Commitments and Contingencies                
Annual lease expense       381        
Ashley Avenue Lease | Maximum                
Commitments and Contingencies                
Annual lease expense       $ 360        
Heights Union                
Commitments and Contingencies                
Size of building space | ft²     1,500          
Heights Union Premises                
Commitments and Contingencies                
Size of building space | ft²     75,000          
Heights Union Premises | Minimum                
Commitments and Contingencies                
Annual lease expense     $ 2,400          
Heights Union Premises | Maximum                
Commitments and Contingencies                
Annual lease expense     $ 3,308