Debt	12 Months Ended
Jan. 31, 2018
Debt Disclosure [Abstract]
Debt	Note 8. Debt Line of Credit In December 2015, we entered into a revolving credit facility (December 2015 Facility), which provided for a revolving loan facility in the amount of up to $40.0 million originally maturing in December 2017. In February 2017, we amended the December 2015 Facility to extend the maturity date to December 2018. The December 2015 Facility was denominated in U.S. dollars and, depending on certain conditions, each borrowing was 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 was required for the December 2015 Facility, we were eligible for the lowest interest rate if we maintained at least $40.0 million in deposits with the lender. In addition, there was 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 to repay the outstanding principal balance under our secured revolving credit facility entered in August 2013. Borrowings under the December 2015 Facility were collateralized by substantially all of our assets in the United States. It also contained 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. As of January 31, 2017, we were in compliance with all financial covenants. On November 27, 2017, we paid in full all amounts outstanding under the December 2015 Facility, including the outstanding principal balance of $40.0 million, and terminated the December 2015 Facility and all related loan and collateral documents, in conjunction with entering into the November 2017 Facility with a different lender with a maturity date of November 27, 2020. The November 2017 Facility provides for an $85.0 million revolving credit facility, with a sublimit of $30.0 million available for the issuance of letters of credit. The proceeds of the revolving loans may be used for general corporate purposes. The revolving loans accrue interest at a prime rate plus a margin of 0.25% or, at our option, a LIBOR rate (based on one, three or six-month interest periods) plus a margin of 1.00%. Interest on the revolving loans is payable quarterly in arrears with respect to loans based on the prime rate and at the end of an interest period in the case of loans based on the LIBOR rate (or at each three-month interval if the interest period is longer than three months). Borrowings under the November 2017 Facility are collateralized by substantially all of our assets. The November 2017 Facility requires us to comply with a maximum leverage ratio and a minimum liquidity requirement. Additionally, the November 2017 Facility contains customary affirmative and negative covenants, including covenants limiting our, and our subsidiaries’, ability to, among other things, grant liens, incur debt, pay dividends or distributions on the capital stock, effect certain mergers, make investments, dispose of assets and enter into transactions with affiliates, in each case subject to customary exceptions for a credit facility of the size and type of the November 2017 Facility. On November 29, 2017, the restrictions on our certificates of deposits that previously collateralized existing letters of credit were released as the letters of credit were included under the November 2017 Facility letter of credit sublimit. As such, we released $26.1 million from restricted cash to cash and cash equivalents. Refer to Note 8 for additional details on the letters of credit and Note 3 for additional details on restricted cash in the form of certificates of deposits. As of January 31, 2018, we were in compliance with all financial covenants. In connection with the above credit facilities, we incurred interest expense, net of capitalized interest costs, of $1.0 million, $0.9 million and $1.9 million during the years ended January 31, 2018, 2017 and 2016, respectively. During the same periods, we capitalized $29,000, $27,000 and $400,000 of interest costs. Interest expense in connection with the above credit facilities may include interest charges for our line of credit, amortization of issuance costs, and unused commitment fees on our line of credit.

Note 8. Debt

Line of Credit

In December 2015, we entered into a revolving credit facility (December 2015 Facility), which provided for a revolving loan facility in the amount of up to $40.0 million originally maturing in December 2017. In February 2017, we amended the December 2015 Facility to extend the maturity date to December 2018.

The December 2015 Facility was denominated in U.S. dollars and, depending on certain conditions, each borrowing was 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 was required for the December 2015 Facility, we were eligible for the lowest interest rate if we maintained at least $40.0 million in deposits with the lender. In addition, there was 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 to repay the outstanding principal balance under our secured revolving credit facility entered in August 2013. Borrowings under the December 2015 Facility were collateralized by substantially all of our assets in the United States. It also contained 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. As of January 31, 2017, we were in compliance with all financial covenants.

On November 27, 2017, we paid in full all amounts outstanding under the December 2015 Facility, including the outstanding principal balance of $40.0 million, and terminated the December 2015 Facility and all related loan and collateral documents, in conjunction with entering into the November 2017 Facility with a different lender with a maturity date of November 27, 2020.

The November 2017 Facility provides for an $85.0 million revolving credit facility, with a sublimit of $30.0 million available for the issuance of letters of credit. The proceeds of the revolving loans may be used for general corporate purposes. The revolving loans accrue interest at a prime rate plus a margin of 0.25% or, at our option, a LIBOR rate (based on one, three or six-month interest periods) plus a margin of 1.00%. Interest on the revolving loans is payable quarterly in arrears with respect to loans based on the prime rate and at the end of an interest period in the case of loans based on the LIBOR rate (or at each three-month interval if the interest period is longer than three months). Borrowings under the November 2017 Facility are collateralized by substantially all of our assets. The November 2017 Facility requires us to comply with a maximum leverage ratio and a minimum liquidity requirement. Additionally, the November 2017 Facility contains customary affirmative and negative covenants, including covenants limiting our, and our subsidiaries’, ability to, among other things, grant liens, incur debt, pay dividends or distributions on the capital stock, effect certain mergers, make investments, dispose of assets and enter into transactions with affiliates, in each case subject to customary exceptions for a credit facility of the size and type of the November 2017 Facility.

On November 29, 2017, the restrictions on our certificates of deposits that previously collateralized existing letters of credit were released as the letters of credit were included under the November 2017 Facility letter of credit sublimit. As such, we released $26.1 million from restricted cash to cash and cash equivalents. Refer to Note 8 for additional details on the letters of credit and Note 3 for additional details on restricted cash in the form of certificates of deposits.

As of January 31, 2018, we were in compliance with all financial covenants.

In connection with the above credit facilities, we incurred interest expense, net of capitalized interest costs, of $1.0 million, $0.9 million and $1.9 million during the years ended January 31, 2018, 2017 and 2016, respectively. During the same periods, we capitalized $29,000, $27,000 and $400,000 of interest costs. Interest expense in connection with the above credit facilities may include interest charges for our line of credit, amortization of issuance costs, and unused commitment fees on our line of credit.