Income Taxes (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Schedule of Collaborative Arrangement Agreements [Line Items]
Provision for income taxes	$ 3,985,000	$ 5,485,000
Income tax liability associated with variable interest entity	0
Unrecognized tax benefits	0		$ 0
Income taxes, interest and penalties accrued	0
Increase in unrecognized tax benefits is reasonably possible	0
Effective income tax rate reconciliation, share-based compensation, excess tax benefit, amount	400,000
Income taxes, material interest or penalties related to uncertain tax positions	0		0
Amount of unrecognized deferred tax liability, undistributed earnings of foreign subsidiaries	0
Parion Sciences, Inc
Schedule of Collaborative Arrangement Agreements [Line Items]
Provision for income taxes	400,000	$ 3,100,000
Accounting Standards Update 2016-09, Excess Tax Benefit
Schedule of Collaborative Arrangement Agreements [Line Items]
Operating loss carryforwards	410,800,000
Deferred income tax assets, net			3,400,000
Domestic Tax Authority | Accounting Standards Update 2016-09, Excess Tax Benefit
Schedule of Collaborative Arrangement Agreements [Line Items]
Operating loss carryforwards	404,700,000
State and Local Jurisdiction | Accounting Standards Update 2016-09, Excess Tax Benefit
Schedule of Collaborative Arrangement Agreements [Line Items]
Operating loss carryforwards	$ 6,100,000
Retained Earnings | Accounting Standards Update 2016-09, Forfeiture Rate Component
Schedule of Collaborative Arrangement Agreements [Line Items]
Cumulative effect of new accounting principle in period of adoption			9,371,000
Additional Paid-in Capital | Accounting Standards Update 2016-09, Forfeiture Rate Component
Schedule of Collaborative Arrangement Agreements [Line Items]
Cumulative effect of new accounting principle in period of adoption			$ (9,371,000)