Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2015	Sep. 30, 2015
Current Assets
Allowance for doubtful accounts	$ 3,537	$ 5,009
Stockholders' Equity
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	13,173,197	13,150,469
Common stock, shares outstanding	13,173,197	13,150,469
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, shares issued	0	0