Restricted cash Restricted cash (Tables)

3 Months Ended

Apr. 30, 2018

Restricted Cash and Cash Equivalents Items [Line Items]

Restrictions on Cash and Cash Equivalents [Table Text Block]

	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