Employee 401(k) Profit Sharing Plans	12 Months Ended
Sep. 30, 2018
Compensation And Retirement Disclosure [Abstract]
Employee 401(k) Profit Sharing Plans	17. EMPLOYEE 401(k) PROFIT SHARING PLANS: Employees are eligible to participate in our 401(k) Profit Sharing Plan (the “Plan”) following their 90-day introductory period starting either April 1 or October 1, provided that they are 21 years of age. Under the Plan, we matched 25% of participants’ contributions, up to a maximum of 5% of each participant’s compensation, in fiscal 2016 and 2017, and 50% of participants’ contributions, up to a maximum of 5% of each participant’s compensation in fiscal 2018. We contributed, under the Plan, or pursuant to previous similar plans, approximately $713,000, $765,000, and $1.9 million for the fiscal years ended September 30, 2016, 2017, and 2018, respectively.

Employee 401(k) Profit Sharing Plans

12 Months Ended

Sep. 30, 2018

Compensation And Retirement Disclosure [Abstract]

17. EMPLOYEE 401(k) PROFIT SHARING PLANS:

Employees are eligible to participate in our 401(k) Profit Sharing Plan (the “Plan”) following their 90-day introductory period starting either April 1 or October 1, provided that they are 21 years of age. Under the Plan, we matched 25% of participants’ contributions, up to a maximum of 5% of each participant’s compensation, in fiscal 2016 and 2017, and 50% of participants’ contributions, up to a maximum of 5% of each participant’s compensation in fiscal 2018. We contributed, under the Plan, or pursuant to previous similar plans, approximately $713,000, $765,000, and $1.9 million for the fiscal years ended September 30, 2016, 2017, and 2018, respectively.