Debt	3 Months Ended
Jul. 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 July 31, 2015 and April 30, 2015. The Company had letters of credit outstanding of $9.3 million as of July 31, 2015. The Credit Facility expires on November 21, 2017 with all advances immediately due and payable. As of July 31, 2015, the Company was not compliant with a non-financial covenant of the Credit Facility. On August 26, 2015, the Company received a waiver from Comerica Bank and expects to be compliant in subsequent periods. The non-compliance had no impact on the Company’s condensed consolidated financial statements. The Company was in compliance with all financial covenants contained in the Credit Facility as of July 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 for the three months ended July 31, 2015. There was no deferred financing cost amortization for the three months ended July 31, 2014.

Debt

3 Months Ended

Jul. 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 July 31, 2015 and April 30, 2015. The Company had letters of credit outstanding of $9.3 million as of July 31, 2015. The Credit Facility expires on November 21, 2017 with all advances immediately due and payable. As of July 31, 2015, the Company was not compliant with a non-financial covenant of the Credit Facility. On August 26, 2015, the Company received a waiver from Comerica Bank and expects to be compliant in subsequent periods. The non-compliance had no impact on the Company’s condensed consolidated financial statements. The Company was in compliance with all financial covenants contained in the Credit Facility as of July 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 for the three months ended July 31, 2015. There was no deferred financing cost amortization for the three months ended July 31, 2014.