Subsequent Events (Details) - Subsequent Event - Revolving Credit Facility	Nov. 27, 2017 USD ($)
Restrictions on Proceeds from Debt for Payment of Dividend and Stock Repurchase, Maximum Aggregate Amount of Dividends and Stock Repurchases Permitted
Subsequent Event [Line Items]
Maximum borrowing capacity	$ 10,000,000
Capital Lease and Increase Aggregate Principal Amount Such Leases Borrower May Enter Into
Subsequent Event [Line Items]
Maximum borrowing capacity	15,000,000
Investments in Entities Not a Party to Amended Credit Agreement
Subsequent Event [Line Items]
Maximum borrowing capacity	$ 2,000,000