Summary of Stock Activity (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Dec. 31, 2015 USD ($) Years $ / shares shares	Sep. 30, 2015 USD ($) Years $ / shares shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Options outstanding | shares	278,460	305,750
Options granted | shares	21,540
Options exercised | shares	(48,830)
Options outstanding weighted average exercise price | $ / shares	$ 23.22	$ 21.90
Options outstanding weighted average exercise price - Granted | $ / shares	31.15
Options outstanding weighted average exercise price - Exercised | $ / shares	$ 18.43
Options outstanding weighted average remaining term | Years	6.2	5.9
Options outstanding weighted average grant date fair value | $	$ 2,648	$ 2,738
Options granted weighted average grant date fair value | $	272
Options exercised weighted average grant date fair value | $	$ (362)
Options exercisable at December 31, 2015 | shares	200,613
Options exerciseable weighted average exercise price | $ / shares	$ 22.00
Options exerciseable weighted average remaining term | Years	5.4
Options exerciseable weighted average grant date fair value | $	$ 1,729
Options vested during three months ended December 31, 2015 | shares	35,596
Options vested weighted average grant date fair value | $	$ 341