Discontinued Operations (Schedule of Operating Results) (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
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Revenues	$ 1,557	$ 7,874	$ 13,923	$ 14,957
Income from discontinued operations, net of tax of $131, $334, $633 and $478, respectively	54	616	1,041	881
Gain on sale of discontinued operations, net of tax of $5,218, $0, $5,218 and $0, respectively	8,563		8,563
Net income from discontinued operations, net of tax	$ 8,617	$ 616	$ 9,604	$ 881
Earnings per share information:
Basic	$ 0.72	$ 0.05	$ 0.80	$ 0.07
Diluted	$ 0.71	$ 0.05	$ 0.80	$ 0.07