Intangible Assets and Goodwill (Details) - USD ($)		3 Months Ended
	Feb. 02, 2017	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Investment capacity under Clinton's management	$ 1,000,000,000
Stock issued (in shares)	1,250,000
Fair value of stock issued	$ 10,100,000
Finite-Lived Intangible Assets, Net [Abstract]
Cost		$ 14,400,000		$ 4,300,000
Accumulated amortization		(1,400,000)		(900,000)
Intangible assets, net		13,000,000		3,400,000
Amortization expense		500,000	$ 200,000
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Amortization expense, remainder of 2017		2,100,000
Amortization expense, 2018		2,700,000
Amortization expense, 2019		2,700,000
Amortization expense, 2020		2,700,000
Amortization expense, 2021		2,600,000
Goodwill		3,800,000		3,800,000
Capacity Agreement
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets useful life	5 years
Finite-Lived Intangible Assets, Net [Abstract]
Cost		10,100,000		0
Accumulated amortization		(300,000)		0
Intangible assets, net		9,800,000		0
Developed Technology
Finite-Lived Intangible Assets, Net [Abstract]
Cost		4,300,000		4,300,000
Accumulated amortization		(1,100,000)		(900,000)
Intangible assets, net		$ 3,200,000		$ 3,400,000