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SHARE-BASED COMPENSATION PLAN (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Aug. 05, 2011
Feb. 23, 2011
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2014
Dec. 31, 2011
Dec. 31, 2015
Dec. 31, 2013
Employees [Member]                  
Share-based Compensation [Abstract]                  
Shares repurchased during the period (in shares)       13,000 13,500        
Employees [Member] | Restricted Stock Awards [Member]                  
Restricted shares - Employees [Roll Forward]                  
Non-vested at beginning of period (in shares)     138,665            
Granted during the year (in shares)     0 4,500          
Vested during the year (in shares)     (26,500)            
Forfeited during the year (in shares)     0            
Non-vested at end of period (in shares)     112,165 138,665          
Weighted-average grant-date fair value - Employees [Abstract]                  
Non-vested at beginning of period (in dollars per share)     $ 13.55            
Granted during the year (in dollars per share)     0 $ 9.13          
Vested during the year (in dollars per share)     9.84            
Forfeited during the year (in dollars per share)     0            
Non-vested at end of period (in dollars per share)     $ 14.43 $ 13.55          
2011 Equity Incentive Plan [Member]                  
Share-based Compensation [Abstract]                  
Vesting requirement lifted for shares (in shares)                 174,000
Shares available for future issuance (in shares)               137,665  
Total compensation cost for the period     $ 0.4 $ 0.5 $ 0.4        
Treasury shares (in shares)     22,000            
Restricted shares - Employees [Roll Forward]                  
Granted during the year (in shares)             400,000    
2011 Equity Incentive Plan [Member] | Minimum [Member]                  
Share-based Compensation [Abstract]                  
Share-based compensation arrangement shares cliff vesting period     4 years            
2011 Equity Incentive Plan [Member] | Maximum [Member]                  
Share-based Compensation [Abstract]                  
Share-based compensation arrangement shares cliff vesting period     5 years            
2011 Equity Incentive Plan [Member] | Employees and Non Employees [Member] | Restricted Stock Awards [Member]                  
Share-based Compensation [Abstract]                  
Share-based compensation arrangement shares cliff vesting period     4 years            
Common shares repurchased at fair value (in shares)           33,000      
Fair value of shares issued to manager (in dollars per share)           $ 9.84      
Unrecognized compensation cost related to unvested restricted stock     $ 0.4            
Weighted average period to recognize the unrecognized compensation cost     8 months 12 days            
Restricted shares - Employees [Roll Forward]                  
Granted during the year (in shares) 74,000 326,000