Earnings Per Share (Computation of Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended												12 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2015	Sep. 30, 2014		Sep. 30, 2013
Numerator:
Income from continuing operations					$ 2,429		$ 2,947		$ 6,976		$ 7,268		$ 9,439	$ 19,620		$ 39,739
Income from discontinued operations														9,604		2,337
Net income	$ 6,312	$ 7,049	$ (3,683)	$ (239)	$ 2,429		$ 2,947		$ 15,593		$ 8,255		$ 9,439	$ 29,224		$ 42,076
Denominator:
Weighted average basic shares													11,869	12,003		11,948
Dilutive effect of restricted stock units													39	55		46
Weighted average diluted shares with assumed conversions													11,908	12,058		11,994
Net earnings per share:
Continuing operations					$ 0.20		$ 0.25		$ 0.58		$ 0.61		$ 0.80	$ 1.63		$ 3.32
Discontinued operations														0.80		0.20
Basic earnings per share	$ 0.54	$ 0.60	$ (0.31)	$ (0.02)	0.20	[1]	0.25	[1]	1.30	[1]	0.69	[1]	0.80	2.43	[1]	3.52
Continuing operations					0.20		0.24		0.58		0.60		0.79	1.62		3.32
Discontinued operations														0.80		0.19
Diluted earnings per share	$ 0.54	$ 0.60	$ (0.31)	$ (0.02)	$ 0.20	[1]	$ 0.24	[1]	$ 1.29	[1]	$ 0.68	[1]	$ 0.79	$ 2.42	[1]	$ 3.51

[1] The increase in earnings per share for the second quarter of Fiscal 2014 was primarily due to the sale of Transdyn. For additional information on this disposition, see Note N.