Equity (Schedule of Stock-based Compensation Expense - by Award Type) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Expense:
Stock-based compensation expense	$ 1,152	$ 1,275	$ 3,285	$ 5,997
Employee stock options
Expense:
Stock-based compensation expense	163	232	544	2,367
Restricted stock awards and units
Expense:
Stock-based compensation expense	547	605	1,468	2,126
Employee stock purchase plan
Expense:
Stock-based compensation expense	124	124	380	537
401(k) match in common stock
Expense:
Stock-based compensation expense	267	280	780	755
Outside director fees in common stock
Expense:
Stock-based compensation expense	$ 51	$ 34	$ 113	$ 212