Business Segments (Schedule Of Long-Lived Assets, By Geographical Areas) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 78,652	$ 59,637
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	60,012	47,966
UNITED KINGDOM
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	6,238	6,409
CANADA
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 12,402	$ 5,262