Earnings Per Share (Computation of Basic and Diluted Earnings per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Numerator:
Income from continuing operations	$ 6,976	$ 6,202	$ 14,243	$ 13,322
Income from discontinued operations	8,617	616	9,604	881
Net income	$ 15,593	$ 6,818	$ 23,847	$ 14,203
Denominator:
Weighted average basic shares	12,004	11,953	11,999	11,946
Dilutive effect of restricted stock units	60	76	58	75
Weighted average diluted shares with assumed conversions	12,064	12,029	12,057	12,021
Net earnings per share:
Continuing operations	$ 0.58	$ 0.52	$ 1.19	$ 1.12
Discontinued operations	$ 0.72	$ 0.05	$ 0.80	$ 0.07
Basic earnings per share	$ 1.30	$ 0.57	$ 1.99	$ 1.19
Continuing operations	$ 0.58	$ 0.52	$ 1.18	$ 1.11
Discontinued operations	$ 0.71	$ 0.05	$ 0.80	$ 0.07
Diluted earnings per share	$ 1.29	$ 0.57	$ 1.98	$ 1.18

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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Per basic share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation.

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