Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2016	Sep. 30, 2015
Statement Of Financial Position [Abstract]
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	15,652	15,652
Preferred stock, shares outstanding	15,652	15,652
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	145,000,000	145,000,000
Common stock, shares issued	59,960,711	59,544,677
Common stock, shares outstanding	59,960,711	59,544,677