Stockholders' Equity (Details)	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2016 vote / shares director $ / shares shares	Jun. 30, 2016 director $ / shares shares	Dec. 31, 2015 shares
Stockholders' Equity
Authorized common stock (in shares)	400,000,000	400,000,000	400,000,000
Number of votes entitled by holders of common stock for each share of common stock | vote / shares	1
Common stock, shares issued	50,632,817	50,632,817	49,940,548
Number of shares issuable upon exercise of warrants (in shares)	15,983,072	15,983,072
Exercise price (in dollars per share) | $ / shares	$ 11.50	$ 11.50
Number of warrants outstanding (in shares)	15,983,072	15,983,072
Rohm and Haas
Stockholders' Equity
Number of shares of Series A Preferred Stock issued as condition to consummation of business combination		1
Number of directors preferred stockholder is entitled to appoint if minimum ownership percentage of common stock is maintained | director	1	1
Minimum percentage of outstanding shares of voting and non-voting common stock to be held to entitle preferred stockholder to appoint director	10.00%	10.00%
Public
Stockholders' Equity
Number of warrants outstanding (in shares)	9,823,072	9,823,072
Number of warrants repurchased (in shares)			1,201,928
Private placement
Stockholders' Equity
Number of warrants outstanding (in shares)	6,160,000	6,160,000