Equity Transactions - Additional Information (Details) - USD ($)		1 Months Ended		3 Months Ended
	Jul. 27, 2017	Oct. 30, 2017	Jul. 31, 2016	Sep. 30, 2017	Mar. 31, 2017
ATM Sales Agreement
Stockholders Equity [Line Items]
Common stock shares sold					912,351
Net proceeds from sale of common stock					$ 67,600,000
Additional ATM Sales Agreement
Stockholders Equity [Line Items]
Common stock shares sold				0
Additional ATM Sales Agreement | Subsequent Event
Stockholders Equity [Line Items]
Common stock shares sold		64,468
Net proceeds from sale of common stock		$ 3,600,000
Maximum | ATM Sales Agreement
Stockholders Equity [Line Items]
Option to sell common stock for cash			$ 150,000,000
Maximum | Additional ATM Sales Agreement
Stockholders Equity [Line Items]
Option to sell common stock for cash	$ 150,000,000