Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Sep. 30, 2014 item	Sep. 30, 2013	Sep. 30, 2012
Cash
Concentration risk, number of banks at which majority of cash were held	1
Shipping and Handling Costs Abstract
Shipping and handling costs related to third-party freight charges, internal warehousing and order fulfillment	$ 15,073	$ 14,222	$ 13,658
Research and Development
Research and development expenditures	$ 3,806	$ 3,388	$ 3,625

The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

+ References+ Details

Cost incurred during the reporting period in transporting goods and services to customers. Includes freight-out costs.

+ References+ Details