XML 15 R39.htm IDEA: XBRL DOCUMENT v2.4.0.8
Schedule of Accrued Expenses (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Mar. 31, 2014
Accounts Payable And Accrued Liabilities Current [Abstract]    
Payroll and Incentive Compensation $ 10,135 $ 12,855
Benefits 9,839 10,158
Interest 2,018 4,813
Property Taxes 3,462 2,801
Power and Fuel 2,304 2,132
Sales and Use Tax 681 658
Legal 1,210 1,831
Other 5,245 6,272
Accrued expenses, total $ 34,894 $ 41,520