Series A Preferred Stock - Liquidation Preference and Share Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2015	Mar. 31, 2016
Temporary Equity [Line Items]
Preferred shares, par value (in dollars per share)	$ 0.001	$ 0.001
Series A Preferred Stock
Temporary Equity [Line Items]
Preferred shares, par value (in dollars per share)	$ 0.001	0.001
Preferred shares, initial liquidation preference per share		$ 1,000
Temporary Equity liquidation preference dividend, percent	20.00%