Stock-Based Compensation, (Stock Options and SARs) (Details) - Stock Options and SARs [Member] $ / shares in Units, $ in Thousands	9 Months Ended
	Oct. 31, 2015 USD ($) $ / shares shares
Number of Outstanding Shares [Roll Forward]
Beginning Balance (in shares) | shares	418,525
Exercised (in shares) | shares	(160,650)
Forfeited (in shares) | shares	(25,725)
Ending Balance (in shares) | shares	232,150
Weighted Average Exercise Price [Abstract]
Beginning Balance (in dollars per share) | $ / shares	$ 16.49
Exercised (in dollars per share) | $ / shares	15.32
Forfeited (in dollars per share) | $ / shares	18.01
Ending Balance (in dollars per share) | $ / shares	$ 17.13
Weighted Average Remaining Contractual Term (years) [Abstract]
Ending Balance	1 year 11 months
Aggregate Intrinsic Value [Abstract]
Ending Balance | $	$ 0