Acquisitions (Proposed Acquisition - TS) (Details) - USD ($) $ in Thousands	9 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Sep. 19, 2016
Business Acquisition
Payments of Merger Related Costs, Financing Activities	$ 14,988	$ 0
TS
Business Acquisition
Payments of Merger Related Costs, Financing Activities	15,000
Business Acquisition, Cost of Acquired Entity, Expected Purchase Price			$ 2,400,000
Business Acquisition, Expected Equity Interest Issue, Number of Shares			2,785,402
Debt Instrument Unused Commitment	$ 3,100,000		$ 3,100,000