Debt	9 Months Ended
Oct. 31, 2017
Debt Disclosure [Abstract]
Debt	Note 7. Debt Line of Credit In December 2015, we entered into a revolving credit facility (December 2015 Facility) with a lender in the amount of up to $40.0 million maturing in December 2017. 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 million in deposits with the lender. In addition, there was an annual fee of 0.2% on the total commitment amount. We drew $40.0 million at 1.82% (six month LIBOR plus 1.25%). Borrowings under the December 2015 Facility were collateralized by substantially all of our assets in the United States. The December 2015 Facility 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 October 31, 2017, we were in compliance with all financial covenants. In February 2017, we amended the December 2015 Facility to extend the maturity date to December 2018. Interest expense, net of capitalized interest costs, for the periods presented is not material. On November 27, 2017, we terminated the December 2015 Facility and entered into the November 2017 Facility. Refer to Note 12 for additional details.

Note 7. Debt

Line of Credit

In December 2015, we entered into a revolving credit facility (December 2015 Facility) with a lender in the amount of up to $40.0 million maturing in December 2017. 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 million in deposits with the lender. In addition, there was an annual fee of 0.2% on the total commitment amount. We drew $40.0 million at 1.82% (six month LIBOR plus 1.25%). Borrowings under the December 2015 Facility were collateralized by substantially all of our assets in the United States. The December 2015 Facility 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 October 31, 2017, we were in compliance with all financial covenants. In February 2017, we amended the December 2015 Facility to extend the maturity date to December 2018. Interest expense, net of capitalized interest costs, for the periods presented is not material.

On November 27, 2017, we terminated the December 2015 Facility and entered into the November 2017 Facility. Refer to Note 12 for additional details.