Equity Transactions - Options (Details)	12 Months Ended
	Sep. 30, 2016 $ / shares shares
$5.53 - $11.24
Summary of information about stock options outstanding and exercisable
Exercise price, low end of range (in dollars per share)	$ 5.53
Exercise price, high end of range (in dollars per share)	$ 11.24
Options Outstanding
Number Outstanding (in shares) | shares	939,057
Weighted-Average Remaining Contractual Life	7 years 9 months 29 days
Weighted-Average Exercise Price (in dollars per share)	$ 7.85
Options Exercisable
Number Exercisable (in shares) | shares	319,733
Weighted-Average Remaining Contractual Life	5 years 1 month 13 days
Weighted-Average Exercise Price (in dollars per share)	$ 9.42
$11.25 - $46.72
Summary of information about stock options outstanding and exercisable
Exercise price, low end of range (in dollars per share)	11.25
Exercise price, high end of range (in dollars per share)	$ 46.72
Options Outstanding
Number Outstanding (in shares) | shares	769,430
Weighted-Average Remaining Contractual Life	5 years 7 days
Weighted-Average Exercise Price (in dollars per share)	$ 21.31
Options Exercisable
Number Exercisable (in shares) | shares	659,900
Weighted-Average Remaining Contractual Life	4 years 6 months 26 days
Weighted-Average Exercise Price (in dollars per share)	$ 21.8