Consolidated Statements of Shareholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2014
Statement of Stockholders' Equity [Abstract]
Dividends per common share (in usd per share)	$ 0.52	$ 0.50	$ 0.48
Adj to APiC, Stock Issued, Issuance Costs related to FY15 business combination	$ 15	$ 38
Debt Issuance Cost			$ 0