Annual report pursuant to Section 13 and 15(d)

Stock-based Plans and Stock-based Compensation (Restricted Stock-Narrative) (Details)

v3.8.0.1
Stock-based Plans and Stock-based Compensation (Restricted Stock-Narrative) (Details)
12 Months Ended
May 19, 2017
USD ($)
item
$ / shares
shares
May 15, 2017
USD ($)
$ / shares
shares
Mar. 23, 2017
USD ($)
item
$ / shares
shares
Nov. 17, 2016
item
shares
Aug. 23, 2016
item
shares
Apr. 01, 2016
item
shares
Dec. 31, 2017
$ / shares
shares
Dec. 31, 2016
$ / shares
shares
Granted 8/23/2016 [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of independent directors, restricted stock units granted         5      
Restricted Stock Units (RSUs) [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of independent directors, restricted stock units granted 4   5          
Units issued | shares 86,668   112,845       199,513 340,480
Value of units | $ $ 65,001   $ 81,248          
Value of units, per share | $ / shares $ 0.75   $ 0.72       $ 0.73 $ 0.72
Number of monthly installments which units vest 12   12          
Restricted Stock Units (RSUs) [Member] | Granted 4/1/2016 [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of independent directors, restricted stock units granted           5    
Units issued | shares           116,070    
Number of monthly installments which units vest           12    
Restricted Stock Units (RSUs) [Member] | Granted 8/23/2016 [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Units issued | shares         108,335      
Number of monthly installments which units vest         12      
Restricted Stock Units (RSUs) [Member] | Granted 11/17/2016 [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of independent directors, restricted stock units granted       5        
Units issued | shares       116,075        
Number of monthly installments which units vest       12        
Performance Shares [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Units issued | shares   1,000,000            
Value of units | $   $ 600,000            
Value of units, per share | $ / shares   $ 0.60