Nature of Business (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Nature of Business (Details) [Line Items]
Types of diabetes population, description	Diabetes mellitus type 2 (also known as type 2 diabetes) is a long-term progressive metabolic disorder characterized by high blood sugar, insulin resistance, and reduced insulin production. People with type 2 diabetes represent 90-95% of the worldwide diabetes population; only 5-10% of this population is diagnosed with type 1 diabetes (a form of diabetes mellitus wherein little to no insulin is produced).
Number of reportable segments	1
Accumulated deficit	$ (284,492)	$ (267,159)
Working capital deficit	3,400
Cash and cash equivalents, restricted cash	$ 2,529	$ 3,836	$ 3,064
Type 2 Diabetes [Member]
Nature of Business (Details) [Line Items]
Types of diabetes population, description	Fewer than 50% of patients treated pharmacologically for type 2 diabetes are adequately managed, meaning that medication does not lower blood sugar adequately and does not halt the progressive nature of diabetes of these patients.