Commitments and Contingencies - Employment Agreements (Details) - USD ($) $ in Thousands			3 Months Ended	12 Months Ended
	Jun. 01, 2015	Oct. 03, 2014	Mar. 31, 2017	Dec. 31, 2016
Mr. Rami S. Ramadan | Employment agreements
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Perpetually renewable employment term			1 year
Annual compensation pursuant to the employment agreement			$ 338	$ 450
Number of days prior to a Change of Control			120 days
Number of months after a Change of Control			24 months
Period after termination where the Company will pay certain terms and conditions			2 years
Director of Development | Employment agreements
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Perpetually renewable employment term	3 years
Notice period required to notify employee that employment agreement will not be renewed	60 days
Automatic renewal period of employment agreement	3 years
Severance payment if employment agreement is not renewed	3 months
Change of control agreements
Severance payment based on number of years of current annual base pay	1 year
KMEs | Change of control severance agreements
Change of control agreements
Severance payment based on number of years of current annual base pay		1 year
Term of health insurance coverage included in severance agreement		1 year
Time period in which an employee can voluntarily terminate employment after a change of control event and still receive salary and health insurance benefits		1 year