Debt	6 Months Ended
Oct. 31, 2015
Debt Disclosure [Abstract]
Debt	Debt Credit Facility On July 18, 2007, the Company entered into a loan and security agreement with Comerica Bank which was most recently amended and restated on November 21, 2014. The Amended and Restated Credit Facility (the “Credit Facility”) provides for a secured, revolving line of credit of up to $70.0 million, with a sublimit of $3.0 million for the incurrence of swingline loans and a sublimit of $15.0 million for the issuance of letters of credit. Borrowings under the Credit Facility are collateralized by substantially all assets of the Company and of its U.S. subsidiaries. The revolving line of credit bears interest at the adjusted LIBOR rate plus 3.5%. Availability under the Credit Facility was $3.7 million as of October 31, 2015 and April 30, 2015. The Company had letters of credit outstanding of $9.3 million as of October 31, 2015. The Credit Facility expires on November 21, 2017 with all advances immediately due and payable. The Company was in compliance with all covenants contained in the Credit Facility as of October 31, 2015. The Company incurred $0.7 million of fees in connection with the Amended and Restated Credit Facility which were capitalized and are being amortized to interest expense using the straight-line method, which approximates the effective interest method, over the life of the Credit Facility. The Company incurred amortization expense on deferred financing costs of $0.1 million and $0.1 million, respectively, for the three and six months ended October 31, 2015. There were no deferred financing cost amortization for the three and six months ended October 31, 2014.

Debt

6 Months Ended

Oct. 31, 2015

Credit Facility

On July 18, 2007, the Company entered into a loan and security agreement with Comerica Bank which was most recently amended and restated on November 21, 2014. The Amended and Restated Credit Facility (the “Credit Facility”) provides for a secured, revolving line of credit of up to $70.0 million, with a sublimit of $3.0 million for the incurrence of swingline loans and a sublimit of $15.0 million for the issuance of letters of credit. Borrowings under the Credit Facility are collateralized by substantially all assets of the Company and of its U.S. subsidiaries. The revolving line of credit bears interest at the adjusted LIBOR rate plus 3.5%. Availability under the Credit Facility was $3.7 million as of October 31, 2015 and April 30, 2015. The Company had letters of credit outstanding of $9.3 million as of October 31, 2015. The Credit Facility expires on November 21, 2017 with all advances immediately due and payable. The Company was in compliance with all covenants contained in the Credit Facility as of October 31, 2015.

The Company incurred $0.7 million of fees in connection with the Amended and Restated Credit Facility which were capitalized and are being amortized to interest expense using the straight-line method, which approximates the effective interest method, over the life of the Credit Facility. The Company incurred amortization expense on deferred financing costs of $0.1 million and $0.1 million, respectively, for the three and six months ended October 31, 2015. There were no deferred financing cost amortization for the three and six months ended October 31, 2014.