Stock-based compensation (Tables)

9 Months Ended

Jun. 30, 2013

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

Schedule of assumptions for stock options granted during period

We used the following weighted-average assumptions for our options granted during the nine months ended June 30, 2013:

Expected life of options	5.0 years
Expected volatility	46.15		%
Expected discrete dividends	—
Weighted average risk-free interest rate	0.63		%
Weighted average fair value	$	5.48

Schedule of stock options and SSARs outstanding, as well as related activity

The following table summarizes stock options and SSARs outstanding as of June 30, 2013, as well as activity during the three and nine months then ended:

	Three Months Ended				Nine Months Ended
	June 30, 2013				June 30, 2013
	Shares		Weighted- Average Exercise Price		Shares		Weighted- Average Exercise Price
Outstanding at beginning of period	574,165		$	32.75	429,965		$	40.80
Granted	5,086		20.58		160,651		13.56
Exercised	(503	)	10.80		(608	)	10.80
Expired	—		—		(7,703	)	96.45
Forfeited	(763	)	12.56		(4,320	)	17.86
Outstanding at end of period	577,985		$	32.69	577,985		$	32.69
Exercisable at end of period	325,396		$	47.52	325,396		$	47.52
Vested or expected to vest in the future	574,752		$	32.79	574,752		$	32.79

Schedule of nonvested stock awards activity

Activity relating to nonvested stock awards, including the Performance Shares for the three and nine months ended June 30, 2013 is as follows:

	Three Months Ended				Nine Months Ended
	June 30, 2013				June 30, 2013
	Shares		Weighted Average Grant Date Fair Value		Shares		Weighted Average Grant Date Fair Value
Beginning of period	374,753		$	18.19	323,335		$	19.61
Granted	6,104		20.58		99,413		10.95
Vested	(94,471	)	33.22		(126,124	)	27.59
Forfeited	(3,615	)	13.30		(13,853	)	13.92
End of period	282,771		$	13.29	282,771		$	13.29