Equity-Based Compensation (Tables)

12 Months Ended

Sep. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan

The compensation cost for employee and non-employee director share-based compensation programs for all current and prior year awards granted are as follows:

	2017		2016		2015
Stock appreciation rights	$	3,045	$	2,482	$	4,955
Performance-based restricted stock units	978		755		—
Restricted stock awards	480		—		—
Employee stock purchase plan	74		—		—
Stock options	5		34		119
Total compensation cost before income taxes	$	4,582	$	3,271	$	5,074
Income tax benefit	$	1,567	$	1,184	$	1,913

Schedule Of Range Of Assumptions Used To Value Equity-Based Awards And The Weighted-Average Fair Value Of The Awards Granted

The following table provides the range of assumptions used to value awards and the weighted-average fair value of the awards granted.

	2017			2016			2015
Expected volatility	27% - 29%			24% - 29%			24% - 38%
Risk-free rate	1.7% - 1.8%			1.4% - 1.8%			.9% - 1.9%
Expected dividends	—		%	—		%	—		%
Expected term	5-6 years			4-6 years			3-7 years
Weighted-average fair value of awards granted	$	21.20		$	18.24		$	28.71

Schedule of Stock Appreciation Rights Activity

SARs and options are as follows:

Stock Appreciation Rights	Number of Awards		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life	Aggregate Intrinsic Value
Outstanding at October 1, 2016	1,467,219		$	47.97
Granted in 2017	176,000		71.65
Exercised in 2017	(463,926	)	41.36
Expired in 2017	(6,002	)	74.38
Forfeited in 2017	(4,999	)	70.94
Outstanding at September 30, 2017	1,168,292		$	53.93	5.6 years	$	34,381
Exercisable at September 30, 2017	863,358		$	48.34	4.6 years	$	30,280

Schedule of Stock Options Activity

Stock Options
Outstanding at October 1, 2016	118,098		$	41.02
Exercised in 2017	(93,416	)	40.64
Outstanding at September 30, 2017	24,682		$	42.45	0.2 years	$	1,011
Exercisable at September 30, 2017	21,788		$	42.45	0.2 years	$	893

Schedule Of Intrinsic Value Of Awards Exercised And Fair Value Of Awards Vested

The intrinsic value of awards exercised and fair value of awards vested are as follows:

	2017		2016		2015
Stock Appreciation Rights
Intrinsic value of SARs exercised	$	13,363	$	865	$	14,566
Total fair value of SARs vested	$	4,044	$	5,876	$	5,424
Stock Options
Intrinsic value of options exercised	$	2,835	$	4,100	$	14,205
Total fair value of options vested	$	66	$	947	$	981

Schedule of Nonvested Performance-based Units Activity

PSUs are as follows:

Performance-Based Restricted Stock Units	Number of Awards		Weighted- Average Grant Date Fair Value
Nonvested at October 1, 2016	38,050		$	64.95
Granted in 2017	40,700		71.65
Forfeited in 2017	(6,000	)	68.63
Nonvested at September 30, 2017	72,750		$	68.39