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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Maximum month-end amount borrowed under the credit facility during the period.

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Debt (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended
	Nov. 30, 2015	Oct. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Sep. 30, 2015
Debt Instrument [Line Items]
Interest expense			$ 115	$ 1,010
Repayments of equipment financing				$ 585
Secured Loan Arrangement
Debt Instrument [Line Items]
Exercise price of warrants (in dollars per share)			$ 2.3229
Line Of Credit-UBS
Debt Instrument [Line Items]
Borrowing capacity					$ 50,000
Borrowings		$ 32,000
Line Of Credit-UBS \| 30-day LIBOR
Debt Instrument [Line Items]
Borrowings	$ 10,000
Spread on variable rate (as a percent)			0.65%
Principal balance	$ 42,000