Related Party Transaction - Clayton G. Wilson (Details) - Clayton G. Wilson - USD ($)  | 
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2017  | 
Mar. 31, 2017  | 
Dec. 31, 2017  | 
Jul. 01, 2017  | 
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| Related Party Transaction [Line Items] | ||||
| Payments for services and covenants | $ 750,000 | |||
| Lump sum payments | $ 200,000 | 200,000 | ||
| Expense under separation and consulting agreement | $ 187,500 | $ 187,500 | ||
| Scenario, Forecast | ||||
| Related Party Transaction [Line Items] | ||||
| Lump sum payments | $ 275,000 | $ 275,000 | 
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- Definition Amount of transactions with related party during the financial reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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- Definition Amount of postemployment benefit liabilities classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Details 
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- Details 
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