Stock-Based Compensation - Schedule of Restricted Stock Units Activity (Details) - Restricted Stock Units (RSUs)	12 Months Ended
	Sep. 30, 2019 $ / shares shares
Number of Restricted Stock Units
Outstanding Beginning Balance (in shares) | shares	190,500
Granted (in shares) | shares	77,150
Vested (in shares) | shares	(117,684)
Forfeited (in shares) | shares	(18,116)
Outstanding Ending Balance (in shares) | shares	131,850
Weighted Average Grant Value Per Share
Outstanding Beginning Balance (in dollars per share) | $ / shares	$ 33.73
Granted (in dollars per share) | $ / shares	34.89
Vested (in dollars per share) | $ / shares	33.57
Forfeited (in dollars per share) | $ / shares	33.75
Outstanding Ending Balance (in dollars per share) | $ / shares	$ 33.76