Restricted cash (Notes)

3 Months Ended

Apr. 30, 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 April 30, 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.

	Three Months Ended April 30,
	2018		2017
Cash and cash equivalents		$9,879		$9,059
Restricted cash	1,101		1,140
Cash, cash equivalents and restricted cash shown in the statement of cashflows		$10,980		$10,199