Restructuring Charges	6 Months Ended
Restructuring Charges	Oct. 31, 2014
Restructuring and Related Activities [Abstract]
Restructuring Charges	Restructuring Charges In the third quarter of fiscal 2012, the Company announced a restructuring initiative (“2012 Restructuring Plan”) that committed to the closing of two of the Company’s manufacturing plants located in Hardy County, West Virginia and Hazard, Kentucky, offering its previously idled plant in Tahlequah, Oklahoma for sale, and realigning its retirement program, including freezing the Company’s defined benefit pension plans. Operations ceased at the Hazard plant in April 2012 and at the Hardy County plant in May 2012, and the idled plant in Tahlequah, Oklahoma was sold in October 2012. The 2012 Restructuring Plan was adopted to reduce costs and increase the Company’s capacity utilization rates. During fiscal 2014, 2013 and fiscal 2012, the Company recognized aggregate pre-tax restructuring charges of $17.1 million related to the 2012 Restructuring Plan. During the six months ended October 31, 2014, the Company recognized pre-tax restructuring charges of $3 thousand related to the 2012 Restructuring Plan. In addition, the Company recognized recurring operating costs for the sole remaining closed facility of $57 thousand for the six months ended October 31, 2014, which are expected to continue until the plant is sold. As of October 31, 2014, the Company had one manufacturing plant classified as held for sale, which was closed in connection with the 2012 Restructuring Plan. During the fourth quarter of fiscal 2014, the Company sold its closed plant located in Hazard, Kentucky. The Company believes that the remaining $1.0 million net book value of the property classified as held for sale is fully recoverable. This asset is included in Other Assets on the Company’s balance sheet at October 31, 2014.

The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled.

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