Debt (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Sep. 30, 2015
Debt [Abstract]
Long-term Debt, Excluding Current Maturities	$ 30,248	$ 30,248	$ 10,234
Line Of Credit Facility [Line Items]
Amount From Credit Facility Used For Acquisitions		20,000
Revolving Credit Facility [Member]
Line Of Credit Facility [Line Items]
Line of Credit Facility, Description	On May 3, 2016, we amended our revolving credit facility (as amended, the “2012 Credit Facility”) with Wells Fargo Bank, National Association (“Wells Fargo”). This amendment increased the maximum revolver amount under the 2012 Credit Facility from $60,000 to $70,000, and extended the maturity date by one year to August 9, 2019. In addition, as further described below, the amendment reduced the interest rate charged under the 2012 Credit Facility, modified the calculation of amounts available under the 2012 Credit Facility, resulting in an increase in available borrowing capacity, created new minimum thresholds for liquidity and Excess Availability (as defined in our amended and restated credit and security agreement under the 2012 Credit Facility (the “Amended Credit Agreement”)), and modified the thresholds of liquidity and Excess Availability below which the Company must maintain a specified Fixed Charge Coverage Ratio (as defined in the Amended Credit Agreement).
Credit Facility Expiration Date	Aug. 09, 2019
Maximum Revolver Amount	$ 70,000	70,000
Credit Facility Covenant Terms	Liquidity (the aggregate amount of unrestricted cash and cash equivalents on hand plus Excess Availability) is less than $14,000 or our Excess Availability is less than $7,000, that we maintain a Fixed Charge Coverage Ratio of not less than 1.0:1.0.
Credit Facility Interest Rate Description	amounts outstanding bear interest at a per annum rate equal to a Daily Three Month LIBOR (as defined in the Credit Agreement), plus an interest rate margin, which is determined quarterly, based on the thresholds below. The amendment reduced the interest rate margin from between 2.00 and 3.00 percent to a range from 1.75 to 2.25 percent.
Liquidity	$ 53,203	53,203
Excess Availability	$ 30,396	30,396
Unused commitment fee	0.375%
Collateral Fees	a collateral monitoring fee ranging from $1 to $2, based on the then-applicable interest rate margin,
Amount From Credit Facility Used For Acquisitions		$ 20,000