Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Narrative (Details)

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Stockholders' Equity - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Sep. 30, 2015
Class of Stock [Line Items]      
Shares of common stock authorized to be repurchased (up to)     170,000
Corporate, General and Administrative Expense      
Class of Stock [Line Items]      
Stock-based compensation expense $ 245 $ 254