Summary of Stock Activity (Details) $ / shares in Units, $ in Thousands	9 Months Ended
	Jun. 30, 2015 USD ($) Years $ / shares shares	Sep. 30, 2014 USD ($) Years $ / shares shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Options outstanding | shares	317,750	326,830
Options granted | shares	39,425
Options forfeited | shares	(6,000)
Options exercised | shares	(60,300)
Spin-off conversion | shares	17,795
Options outstanding weighted average exercise price | $ / shares	$ 21.64	$ 25.43
Options outstanding weighted average exercise price - Granted | $ / shares	26.97
Options outstanding weighted average exercise price - forfeited | $ / shares	14.97
Options outstanding weighted average exercise price - Exercised | $ / shares	12.95
Options outstanding weighted average exercise price - Spin-off conversion | $ / shares	$ 20.63
Options outstanding weighted average remaining term | Years	5.9	5.0
Options outstanding weighted average grant date fair value	$ 2,824	$ 3,481
Options granted weighted average grant date fair value	432
Options forfeited weighted average grant date fair value	(35)
Options exercised weighted average grant date fair value	(344)
Options Spin-off adjustment weighted average grant date fair value	(865)
Options Spin-off conversion weighted average grant date fair value	$ 155
Options exercisable at June 30, 2015 | shares	225,847
Options exerciseable weighted average exercise price | $ / shares	$ 20.57
Options exerciseable weighted average remaining term | Years	5.0
Options exerciseable weighted average grant date fair value	$ 1,837
Options vested during nine months ended June 30, 2015 | shares	37,546
Options vested weighted average grant date fair value	$ 329