Quarterly report pursuant to Section 13 or 15(d)

LONG-TERM DEBT (Details Textual)

v2.4.0.6
LONG-TERM DEBT (Details Textual) (USD $)
 9 Months Ended
Dec. 31, 2012
Oct. 31, 2012
Mar. 31, 2012
Dec. 31, 2012
Convertible Subordinated 4.50 Notes [Member]
Nov. 06, 2012
Convertible Subordinated 4.50 Notes [Member]
Oct. 31, 2012
Convertible Subordinated 4.50 Notes [Member]
Jan. 31, 2013
W F Credit Agreement [Member]
Jun. 28, 2012
W F Credit Agreement [Member]
Oct. 31, 2012
Letter Of Credit [Member]
Debt Instrument, Face Amount         $ 10,000,000 $ 60,000,000      
Debt Instrument, Interest Rate at Period End         4.50% 4.50%      
Debt Instrument, Maturity Date       Nov. 15, 2017          
Debt Conversion Converted Instrument Per Shares (in dollars per share)       607.1645          
Debt Conversion, Converted Instrument, Amount       1,000          
Debt Instrument, Convertible, Conversion Price       $ 1.65          
Debt Instrument, Frequency of Periodic Payment       We will pay 4.50% interest per annum on the principal amount of the 4.50% notes semi-annually.          
Line of Credit Facility, Amount Outstanding   49,500,000             1,100,000
Line of Credit Facility, Current Borrowing Capacity 71,900,000                
Other Assets, Noncurrent 10,055,000   6,962,000 2,300,000          
Compensating Balance, Amount               25,000,000  
Prior Liquidity Requirement Minimum To Avoid Field Audit Covenant             20,000,000    
Compliance Certificate Filings Required When Monthly Borrowing Exceed             $ 15,000,000