Stock-Based Compensation (Tables)

6 Months Ended

Jul. 31, 2014

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Activity under Company's Stock Option Plans

A summary of activity under the Company’s stock option plans for the six months ended July 31, 2014 is presented below:

Options	Shares			Weighted Average Exercise Price		Weighted Average Remaining Contract Term (Years)		Weighted Average Fair Value
Outstanding, January 31, 2014		916,150		$	17.36		6.04	$	5.58
Granted		180,500		$	27.09
Exercised		(153,800	)	$	14.84
Outstanding, July 31, 2014		942,850		$	19.63		6.65	$	5.72
Exercisable, July 31, 2014		540,350		$	15.67		5.92	$	5.91
Exercisable, January 31, 2014		613,150		$	15.40		5.09	$	6.15

Summary of Change in Number of Non-Vested Options to Purchase Shares of Common Stock

A summary of the change in the number of non-vested options to purchase shares of common stock for the six months ended July 31, 2014 is presented below:

	Shares			Weighted Average Fair Value
Nonvested, January 31, 2014		303,000		$	4.40
Granted		180,500		$	6.28
Vested		(81,000	)	$	3.30
Nonvested, July 31, 2014		402,500		$	5.46

Summary of Assumptions Used to Estimate Fair Value of Stock Options Granted

The fair value of each stock option granted in the six-month period ended July 31, 2014 was estimated on the corresponding date of award using the Black-Scholes option-pricing model based on the following weighted average assumptions. No awards were made during the three months ended July 31, 2014.

	Six Months Ended July 31, 2014
Dividend yield		2.77	%
Expected volatility		33.83	%
Risk-free interest rate		1.26	%
Expected life in years		4.81