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SHARE-BASED COMPENSATION: Other (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Jun. 30, 2016
Mar. 31, 2016
Performance Stock Option Unit    
Weighted-average remaining contractual term    
Outstanding at the end of the period (in years) 1 year 18 days  
Other performance based    
Share-based compensation activity    
Outstanding at the beginning of the period (in shares) 635,655  
Outstanding at the end of the period (in shares) 635,655 635,655
Share-based compensation, Weighted average fair value per share at grant date    
Outstanding at the beginning of the period (in dollars per share) $ 4.07  
Outstanding at the end of the period (in dollars per share) $ 4.07 $ 4.07
Weighted-average remaining contractual term    
Outstanding at the end of the period (in years)   1 year 3 months 18 days
Share-based Activity - Other disclosures    
Share-based compensation expense $ 0.2  
Future share-based compensation expense expected $ 1.1  
Period for recognition of unrecognized stock-based compensation expense 2 years