Restricted cash (Notes)

6 Months Ended

Jul. 31, 2018

Restricted Cash and Cash Equivalents [Abstract]

Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]

Restricted cash

Restricted cash held by foreign subsidiaries was $1.1 million as of July 31, 2018 and $1.2 million as of January 31, 2018. Restricted cash held by foreign subsidiaries related to fixed deposits that also serve as security deposits and guarantees.

	Six Months Ended July 31,
	2018		2017
Cash and cash equivalents		$5,247		$8,546
Restricted cash	1,108		893
Cash, cash equivalents and restricted cash shown in the statement of cashflows		$6,355		$9,439