Supplemental Cash Flow Information Supplemental cash flow (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2014
Schedule Of Cash Flow Supplemental [Line Items]
Interest Paid	$ 12,094	$ 11,937	$ 12,225
Income Taxes Paid, Net	15,103	11,427	11,871
Payments to Noncontrolling Interests	11,270	$ 0	$ 0
Calypto
Schedule Of Cash Flow Supplemental [Line Items]
Payments to Noncontrolling Interests	$ 11,088