Income Taxes (Reconciliation Actual Income Taxes to Expected Federal Corporate Taxes) (Details) (USD $)	3 Months Ended								12 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Income Tax Disclosure [Abstract]
Tax provision (benefit) at the U.S. rate									$ (6,750,000)	$ (11,190,000)	$ 13,410,000
Effect of permanent book-tax differences									970,000	2,010,000	510,000
State tax provision									(110,000)	(80,000)	100,000
Valuation allowance for net deferred tax assets									5,850,000	1,740,000	470,000
Uncertain tax items									450,000	(240,000)	1,620,000
Expiration of foreign net operating loss									0	2,320,000	170,000
Difference between U.S. and foreign rates									1,440,000	0	0
Other items									10,000	120,000	(90,000)
Total provision (benefit)	$ 580,000	$ 2,560,000	$ (800,000)	$ (480,000)	$ (3,670,000)	$ (1,110,000)	$ (220,000)	$ (320,000)	$ 1,860,000	$ (5,320,000)	$ 16,190,000