Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2017	Sep. 30, 2016
Current Assets
Allowance for doubtful accounts	$ 1,164	$ 3,730
Stockholders' Equity
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, shares issued	0	0
Common stock, par value (USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	13,200,510	13,179,355
Common stock, shares outstanding	13,200,510	13,179,355