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SHARE CAPITAL (Details 2) (USD $)
In Millions, except Share data, unless otherwise specified
2 Months Ended 3 Months Ended 6 Months Ended 1 Months Ended 2 Months Ended 3 Months Ended
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2012
May 31, 2011
Stock Options
Jun. 30, 2011
Stock Options
Jun. 30, 2012
Stock Options
Mar. 31, 2012
Stock Options
Stock Incentive Plans              
Additional common shares reserved for issuance (as a percent)       5.00%      
Stock-based compensation expenses $ 0 $ 0.7 $ 1.3     $ 0.2  
No. of stock options              
Balance, beginning of period (in shares)           645,323  
Balance, end of period (in shares)         708,023 645,323 645,323
Outstanding and exercisable, end of period (in shares)           434,559  
Weighted average exercise price              
Balance, beginning of period (in dollars per share)           $ 20.00  
Granted (in dollars per share)         $ 20.00    
Balance, end of period (in dollars per share)         $ 20.00 $ 20.00 $ 20.00
Outstanding and exercisable, end of period (in dollars per share)           $ 20.00  
Weighted Average Remaining Contractual Term of Stock Options Outstanding - Years              
Balance, end of period         6 years 10 months 13 days 5 years 10 months 13 days 6 years 2 months 1 day
Granted         7 years    
Outstanding and exercisable, end of period           5 years 10 months 13 days  
Weighted average grant date fair value              
Balance, beginning of period (in dollars per share)           $ 9.50  
Granted (in dollars per share)         $ 9.40    
Balance, end of period (in dollars per share)         $ 9.00 $ 9.50 $ 9.50
Outstanding and exercisable, end of period (in dollars per share)           $ 9.64  
Number of Nonvested Stock Options              
Balance, beginning of period (in shares)           316,146  
Granted (in shares)         708,023   0
Vested (in shares)           (105,382)  
Balance, end of period (in shares)         708,023 210,764 316,146
Weighted average grant-date fair value              
Balance, beginning of period (in dollars per share)           $ 9.62  
Granted (in dollars per share)         $ 9.40    
Vested (in dollars per share)           $ 8.42  
Balance, end of period (in dollars per share)         $ 9.40 $ 9.22 $ 9.62
Weighted average exercise price              
Balance, beginning of period (in dollars per share)           $ 20.00  
Granted (in dollars per share)         $ 20.00    
Vested (in dollars per share)           $ 20.00  
Balance, end of period (in dollars per share)         $ 20.00 $ 20.00 $ 20.00