Share-Based Payments (Tables)

6 Months Ended

Mar. 31, 2016

Share-Based Payments [Abstract]

Restricted stock activity

The transactions for restricted stock for the six months ended March 31, 2016 were as follows:

				Weighted-
				average
				grant-date
	Shares			fair value
Non-vested at September 30, 2015		570,567		$	33.66
Granted		224,125			51.91
Vested		(260,947	)		30.17
Expired or forfeited		(3,385	)		39.55
Non-vested at March 31, 2016		530,360		$	45.21

Stock option activity

The transactions for shares under options for the six months ended March 31, 2016 were as follows:

						Weighted-
				Weighted-		average		Aggregate
				average		remaining		intrinsic
	Shares			exercise price		contractual term		value
Outstanding, September 30, 2015		337,938		$	39.19
Exercised		(47,834	)		37.59
Expired or forfeited		(98,745	)		37.33
Outstanding, March 31, 2016		191,359			40.56		0.6	$	2,089
Exercisable, March 31, 2016		114,193		$	40.56		0.6	$	1,246

Non-vested options activity

The transactions for non-vested options for the six months ended March 31, 2016 were as follows:

				Weighted-average
				grant-date
Non-vested shares	Shares			fair value
Non-vested at September 30, 2015		166,406		$	12.43
Expired or forfeited		(89,240	)		12.56
Non-vested at March 31, 2016		77,166		$	12.29

Assumptions used in estimating fair value

The following table indicates the assumptions used in estimating fair value of restricted stock granted during the six-month periods ended March 31, 2016 and 2015.

	Six Months Ended March 31,
	2016			2015
Expected volatility		20.7	%		22.2	%
Dividend yield		1.0	%		1.0	%
Average risk-free interest rate		1.7	%		1.7	%
Average expected term (years)		2.1			1.8