Income Taxes (Reconciliation Actual Income Taxes to Expected Federal Corporate Taxes) (Details) - USD ($) $ 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
Income Tax Disclosure [Abstract]
Expected U.S. federal corporate income tax rate, percent									34.00%
Tax benefit at the U.S. rate									$ (1,630)	$ (4,440)	$ (6,750)
Effect of permanent book-tax differences									(1,570)	30	970
State tax provision									(40)	80	(110)
Valuation allowance for net deferred tax assets									2,490	3,900	5,850
Uncertain tax items									330	370	450
Foreign tax rate differential									1,890	1,000	1,440
Other items									440	300	10
Total provision	$ 1,270	$ 290	$ 170	$ 180	$ (645)	$ 1,325	$ 0	$ 560	$ 1,910	$ 1,240	$ 1,860