Stockholders' Equity - Warrants (Details) - USD ($) $ / shares in Units, $ in Millions	Apr. 30, 2025	Jan. 31, 2025
Equity Classified Common Stock Warrants
Class of Warrant or Right [Line Items]
Number of Shares (in shares)	131,574	131,574
Fair Value at Issuance	$ 13.4	$ 13.4
TriplePoint Equity-Classified Common Stock Warrants Issued Nov 2016
Class of Warrant or Right [Line Items]
Number of Shares (in shares)	4,144	4,144
Exercise Price (usd per warrant)	$ 150.80	$ 150.80
Fair Value at Issuance	$ 0.3	$ 0.3
TriplePoint Equity-Classified Common Stock Warrants Issued Jun 2017
Class of Warrant or Right [Line Items]
Number of Shares (in shares)	911	911
Exercise Price (usd per warrant)	$ 150.80	$ 150.80
Fair Value at Issuance	$ 0.1	$ 0.1
TriplePoint Equity-Classified Common Stock Warrants Issued Sep 2017
Class of Warrant or Right [Line Items]
Number of Shares (in shares)	746	746
Exercise Price (usd per warrant)	$ 150.80	$ 150.80
Fair Value at Issuance	$ 0.1	$ 0.1
TriplePoint Equity-Classified Common Stock Warrants Issued Jan 2018
Class of Warrant or Right [Line Items]
Number of Shares (in shares)	828	828
Exercise Price (usd per warrant)	$ 150.80	$ 150.80
Fair Value at Issuance	$ 0.1	$ 0.1
TriplePoint Equity-Classified Common Stock Warrants Issued Apr 2018
Class of Warrant or Right [Line Items]
Number of Shares (in shares)	828	828
Exercise Price (usd per warrant)	$ 150.80	$ 150.80
Fair Value at Issuance	$ 0.1	$ 0.1
TriplePoint Equity-Classified Common Stock Warrants Issued Nov 2015
Class of Warrant or Right [Line Items]
Number of Shares (in shares)	1,760	1,760
Exercise Price (usd per warrant)	$ 340.77	$ 340.77
Fair Value at Issuance	$ 0.2	$ 0.2
TriplePoint Equity-Classified Common Stock Warrants Issued Jun 2016
Class of Warrant or Right [Line Items]
Number of Shares (in shares)	1,408	1,408
Exercise Price (usd per warrant)	$ 340.77	$ 340.77
Fair Value at Issuance	$ 0.2	$ 0.2
TriplePoint Equity-Classified Common Stock Warrants Issued Sep 2016
Class of Warrant or Right [Line Items]
Number of Shares (in shares)	1,232	1,232
Exercise Price (usd per warrant)	$ 340.77	$ 340.77
Fair Value at Issuance	$ 0.1	$ 0.1
CHS (US) Management LLC
Class of Warrant or Right [Line Items]
Number of Shares (in shares)	19,717	19,717
Exercise Price (usd per warrant)	$ 420.00	$ 420.00
Fair Value at Issuance	$ 5.3	$ 5.3
Double Helix Temasek Equity-Classified Common Stock Warrants Two Issued January 2023
Class of Warrant or Right [Line Items]
Number of Shares (in shares)	100,000	100,000
Exercise Price (usd per warrant)	$ 100.00	$ 100.00
Fair Value at Issuance	$ 6.9	$ 6.9