Restricted cash Restricted cash (Tables)

6 Months Ended

Jul. 31, 2017

Restricted Cash and Cash Equivalents Items [Line Items]

Restrictions on Cash and Cash Equivalents [Table Text Block]

	Six Months Ended July 31,
	2017		2016
Cash and cash equivalents		$8,546		$11,612
Restricted cash	893		942
Cash, cash equivalents and restricted cash shown in the statement of cashflows		$9,439		$12,554