BANK INDEBTEDNESS	3 Months Ended
Jun. 30, 2012
Line of Credit Facility [Abstract]
BANK INDEBTEDNESS	BANK INDEBTEDNESS As discussed in detail in Note 14, Lower Lakes, Lower Lakes Transportation and Grand River, as borrowers, and Rand LL Holdings, Rand Finance and the Company, as guarantors, entered into a Second Amended and Restated Credit Agreement (the “Second Amended and Restated Credit Agreement”) with their lenders on September 28, 2011, and on December 1, 2011, entered into a First Amendment (the “Amendment”) to the Second Amended and Restated Credit Agreement. As of June 30, 2012 and March 31, 2012, the Company had authorized operating lines of credit under the Second Amended and Restated Credit Agreement, as amended, and the Amended and Restated Credit Agreement (as such term is defined in Note 14), respectively, in the amounts of CDN $13,500 and US $13,500, and was utilizing CDN $11,000 as of June 30, 2012 and $Nil as of March 31, 2012 and US $13,000 as of June 30, 2012 and $Nil as of March 31, 2012, and maintained letters of credit of CDN $1,425 as of June 30, 2012 and CDN $500 as of March 31, 2012. The Second Amended and Restated Credit Agreement provides that the line of credit bears interest at Canadian Prime Rate plus 3.5% or Canadian 30 day BA rate plus 4.5% on Canadian Dollar borrowings, and the U.S. Base rate plus 3.5% or LIBOR plus 4.5% on U.S. Dollar borrowings, and is secured under the same terms and has the same financial covenants described in Note 14. Such interest rate margins had previously increased by 0.75% on June 28, 2011 under the Fourth Amendment (as such term is defined in Note 14). Available collateral for borrowings and letters of credit are based on eligible accounts receivable, which are limited to 85% of those receivables that are not over 90 days old, not in excess of 20% for one customer in each line and certain other standard limitations. As of June 30, 2012, the Company had fully used its credit availability on the combined lines of credit and seasonal overadvance facility.

BANK INDEBTEDNESS

As discussed in detail in Note 14, Lower Lakes, Lower Lakes Transportation and Grand River, as borrowers, and Rand LL Holdings, Rand Finance and the Company, as guarantors, entered into a Second Amended and Restated Credit Agreement (the “Second Amended and Restated Credit Agreement”) with their lenders on September 28, 2011, and on December 1, 2011, entered into a First Amendment (the “Amendment”) to the Second Amended and Restated Credit Agreement. As of June 30, 2012 and March 31, 2012, the Company had authorized operating lines of credit under the Second Amended and Restated Credit Agreement, as amended, and the Amended and Restated Credit Agreement (as such term is defined in Note 14), respectively, in the amounts of CDN $13,500 and US $13,500, and was utilizing CDN $11,000 as of June 30, 2012 and $Nil as of March 31, 2012 and US $13,000 as of June 30, 2012 and $Nil as of March 31, 2012, and maintained letters of credit of CDN $1,425 as of June 30, 2012 and CDN $500 as of March 31, 2012. The Second Amended and Restated Credit Agreement provides that the line of credit bears interest at Canadian Prime Rate plus 3.5% or Canadian 30 day BA rate plus 4.5% on Canadian Dollar borrowings, and the U.S. Base rate plus 3.5% or LIBOR plus 4.5% on U.S. Dollar borrowings, and is secured under the same terms and has the same financial covenants described in Note 14. Such interest rate margins had previously increased by 0.75% on June 28, 2011 under the Fourth Amendment (as such term is defined in Note 14). Available collateral for borrowings and letters of credit are based on eligible accounts receivable, which are limited to 85% of those receivables that are not over 90 days old, not in excess of 20% for one customer in each line and certain other standard limitations. As of June 30, 2012, the Company had fully used its credit availability on the combined lines of credit and seasonal overadvance facility.