Debt	9 Months Ended
Oct. 31, 2015
Debt Disclosure [Abstract]
Debt	Note 9. Debt Line of Credit In August 2013, we entered into a two-year $100.0 million secured revolving credit facility (August 2013 Facility). The August 2013 Facility was denominated in U.S. dollars and, depending on certain conditions, each borrowing was subject to a floating interest rate equal to the London Interbank Offer Rate (LIBOR) plus 3.0% or the Alternate Base Rate (ABR) plus 2.0%. In addition, there was a commitment fee of 0.5% on the outstanding unused commitment amount. At closing, we drew $34.0 million at 3.4% (six month LIBOR plus 3.0%) which we used to repay previous loans, as well as for other general corporate purposes. In July 2014, we drew an additional $12.0 million under the credit facility at 3.3% (six month LIBOR plus 3.0%). In September 2014, we paid down $6.0 million and amended the August 2013 Facility to reduce our borrowing capacity from $100.0 million to $75.0 million and extend the facility through August 2016. Concurrently and in conjunction with the execution of our new headquarters lease in September 2014, letters of credit in the aggregate amount of $25.0 million were issued under the August 2013 Facility. These letters of credit were subject to interest at 3.25% per annum. In March 2015, we amended the August 2013 Facility to reduce our borrowing capacity to $60.0 million as of April 2015, and to increase certain limitations on the amount of capital asset and real estate related obligations we may incur. In connection with this amendment, the letters of credit under the August 2013 Facility were cancelled, and a new letter of credit in the amount of $25.0 million was issued by a party not affiliated with the August 2013 Facility, which was secured by a certificate of deposit in the same amount. As of October 31, 2015, the outstanding borrowings under the August 2013 Facility were $40.0 million, and our remaining borrowing capacity under the August 2013 Credit Facility was $20.0 million. Borrowings under the August 2013 Facility were collateralized by substantially all of our assets. The August 2013 Facility also contained various covenants, including covenants related to the delivery of financial and other information, the maintenance of quarterly financial covenants, material adverse effects, as well as limitations on dispositions, mergers or consolidations and other corporate activities. As of October 31, 2015, we were in compliance with all financial covenants under the August 2013 Facility. In December 2015, we paid in full all amounts outstanding under the August 2013 Facility, including the outstanding principal balance of $40.0 million, and terminated the August 2013 Facility and all related loan documents and collateral documents, in conjunction with entering into a new revolving credit facility with a different lender (December 2015 Facility). The December 2015 Facility provides for a revolving loan facility in the amount of up to $40.0 million maturing in December 2017. The December 2015 Facility is denominated in U.S. dollars and, depending on certain conditions, each borrowing is subject to a floating interest rate equal to either the prime rate plus a spread of 0.25% to 2.75% or a reserve adjusted LIBOR rate (based on one, three or six-month interest periods) plus a spread of 1.25% to 3.75%. Although no minimum deposit is required for the December 2015 Facility, we are eligible for the lowest interest rate if we maintain at least $40 million in deposits with the lender. In addition, there is an annual fee of 0.2% on the total commitment amount. At closing, we drew $40.0 million at 1.82% (six month LIBOR plus 1.25%) which we used repay the outstanding principal balance under the August 2013 Facility. Borrowings under the December 2015 Facility are collateralized by substantially all of our assets in the United States. It also contains various covenants, including covenants related to the delivery of financial and other information, the maintenance of quarterly financial covenants, as well as customary limitations on dispositions, mergers or consolidations and other corporate activities. In connection with the August 2013 Facility, we incurred interest expense of $419,000 and $379,000 during the three months ended October 31, 2015 and 2014, respectively, and $1.5 million and $1.5 million during the nine months ended October 31, 2015 and 2014, respectively. During the same periods, we capitalized $291,000 and $91,000 of interest costs during the three months ended October 31, 2015 and 2014, respectively, and $389,000 and $278,000 during the nine months ended October 31, 2015 and 2014, respectively. Interest expense also includes amortization of issuance costs, unused commitment fees and fees on letters of credit which are recognized over the related term of the borrowing.

Note 9. Debt

Line of Credit

In August 2013, we entered into a two-year $100.0 million secured revolving credit facility (August 2013 Facility). The August 2013 Facility was denominated in U.S. dollars and, depending on certain conditions, each borrowing was subject to a floating interest rate equal to the London Interbank Offer Rate (LIBOR) plus 3.0% or the Alternate Base Rate (ABR) plus 2.0%. In addition, there was a commitment fee of 0.5% on the outstanding unused commitment amount. At closing, we drew $34.0 million at 3.4% (six month LIBOR plus 3.0%) which we used to repay previous loans, as well as for other general corporate purposes. In July 2014, we drew an additional $12.0 million under the credit facility at 3.3% (six month LIBOR plus 3.0%). In September 2014, we paid down $6.0 million and amended the August 2013 Facility to reduce our borrowing capacity from $100.0 million to $75.0 million and extend the facility through August 2016. Concurrently and in conjunction with the execution of our new headquarters lease in September 2014, letters of credit in the aggregate amount of $25.0 million were issued under the August 2013 Facility. These letters of credit were subject to interest at 3.25% per annum.

In March 2015, we amended the August 2013 Facility to reduce our borrowing capacity to $60.0 million as of April 2015, and to increase certain limitations on the amount of capital asset and real estate related obligations we may incur. In connection with this amendment, the letters of credit under the August 2013 Facility were cancelled, and a new letter of credit in the amount of $25.0 million was issued by a party not affiliated with the August 2013 Facility, which was secured by a certificate of deposit in the same amount. As of October 31, 2015, the outstanding borrowings under the August 2013 Facility were $40.0 million, and our remaining borrowing capacity under the August 2013 Credit Facility was $20.0 million.

Borrowings under the August 2013 Facility were collateralized by substantially all of our assets. The August 2013 Facility also contained various covenants, including covenants related to the delivery of financial and other information, the maintenance of quarterly financial covenants, material adverse effects, as well as limitations on dispositions, mergers or consolidations and other corporate activities. As of October 31, 2015, we were in compliance with all financial covenants under the August 2013 Facility.

In December 2015, we paid in full all amounts outstanding under the August 2013 Facility, including the outstanding principal balance of $40.0 million, and terminated the August 2013 Facility and all related loan documents and collateral documents, in conjunction with entering into a new revolving credit facility with a different lender (December 2015 Facility). The December 2015 Facility provides for a revolving loan facility in the amount of up to $40.0 million maturing in December 2017.

The December 2015 Facility is denominated in U.S. dollars and, depending on certain conditions, each borrowing is subject to a floating interest rate equal to either the prime rate plus a spread of 0.25% to 2.75% or a reserve adjusted LIBOR rate (based on one, three or six-month interest periods) plus a spread of 1.25% to 3.75%. Although no minimum deposit is required for the December 2015 Facility, we are eligible for the lowest interest rate if we maintain at least $40 million in deposits with the lender. In addition, there is an annual fee of 0.2% on the total commitment amount. At closing, we drew $40.0 million at 1.82% (six month LIBOR plus 1.25%) which we used repay the outstanding principal balance under the August 2013 Facility. Borrowings under the December 2015 Facility are collateralized by substantially all of our assets in the United States. It also contains various covenants, including covenants related to the delivery of financial and other information, the maintenance of quarterly financial covenants, as well as customary limitations on dispositions, mergers or consolidations and other corporate activities.

In connection with the August 2013 Facility, we incurred interest expense of $419,000 and $379,000 during the three months ended October 31, 2015 and 2014, respectively, and $1.5 million and $1.5 million during the nine months ended October 31, 2015 and 2014, respectively. During the same periods, we capitalized $291,000 and $91,000 of interest costs during the three months ended October 31, 2015 and 2014, respectively, and $389,000 and $278,000 during the nine months ended October 31, 2015 and 2014, respectively. Interest expense also includes amortization of issuance costs, unused commitment fees and fees on letters of credit which are recognized over the related term of the borrowing.