Equity Securities and Stock-Based Compensation (Details) - USD ($) $ in Thousands, shares in Millions	3 Months Ended			9 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Treasury stock and related deferred compensation obligation at fair value	$ 1,400			$ 1,400
Amount that the fair values of treasury stock and related deferred compensation obligation exceed the carrying values at cost	500			500
Stock-based compensation	700		$ 600	2,069	$ 1,576
Total compensation cost related to unvested awards not yet recognized	$ 3,000			$ 3,000
2010 Incentive Compensation Plan
Board approved share-based award grants to officers, employees, and directors (in shares)		0.3
Awards granted vesting period		3 years
Period of average stock price hurdles that precluded vesting		60 days