Long-Term Debt (Credit Facility, Narrative) (Details) (USD $)	3 Months Ended							3 Months Ended		6 Months Ended	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2017 Scenario, Forecast	Mar. 31, 2016 Scenario, Forecast	Dec. 31, 2015 Scenario, Forecast	Sep. 30, 2015 Scenario, Forecast	Mar. 31, 2015 Scenario, Forecast	Sep. 30, 2014 Scenario, Forecast	Mar. 31, 2014 Revolving credit facility [Member]	Sep. 30, 2014 Revolving credit facility [Member] Scenario, Forecast	Jun. 30, 2014 Revolving credit facility [Member] Scenario, Forecast	Mar. 31, 2014 Term loan [Member]	Mar. 31, 2014 Swing loan credit facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Current Borrowing Capacity								$ 105,000,000			$ 20,000,000
Payments Of Financing Costs	475,000
Maximum borrowings under revolver												7,000,000
Commitment fee on the daily unused portion of the Revolver								0.25%
Quarterly term loan payments											750,000
Debt Instrument, Frequency of Periodic Payment											quarterly
Debt Instrument, Maturity Date											Mar. 19, 2017
Maximum leverage ratio			3.00	3.25	3.50	3.75
Minimum fixed charge coverage ratio		1.1					1.0
Restrictive Covenants, Earnings Before Interest, Taxes, Depreciation, and Amortization									$ 14,000,000	$ 12,000,000
Debt Instrument, Interest Rate at Period End								3.66%
Debt Instrument, Description of Variable Rate Basis								LIBOR