Restricted cash Restricted cash (Tables)

6 Months Ended

Jul. 31, 2018

Restricted Cash and Cash Equivalents Items [Line Items]

Restrictions on Cash and Cash Equivalents [Table Text Block]

	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