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