Condensed Consolidated Statements of Shareholders' Equity (Deficit) (Parenthetical) - USD ($)		3 Months Ended
	Jun. 16, 2015	Jun. 30, 2015
Common stock
Sale of common stock in IPO (price per share)	$ 15.00	$ 15.00
Underwriting discounts, commissions and offering expenses	$ 27,748,000	$ 27,748,000