Geographic Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated revenues	$ 41,993	$ 35,868	$ 39,054	$ 38,147	$ 39,502	$ 36,306	$ 37,082	$ 36,800	$ 155,062	$ 149,690	$ 152,102
Domestic [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated revenues									117,853	115,959	121,221
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated revenues									24,966	21,559	20,245
Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Consolidated revenues									$ 12,243	$ 12,172	$ 10,636