Revenue and Cost Of Goods Sold By Source (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Geographic Information
Revenues	$ 14,960	$ 11,227	$ 26,860	$ 38,239
Cost of goods sold (excluding amortization)	3,286	3,389	5,916	9,375
Amortization of Intangible Assets	1,273	181	1,364	362
Qsymia
Geographic Information
Revenues	11,134	8,518	20,766	26,138
Cost of goods sold (excluding amortization)	1,652	1,400	2,695	3,884
Amortization of Intangible Assets	90	181	181	362
PANCREAZE
Geographic Information
Revenues	2,190		2,190
Cost of goods sold (excluding amortization)	567		568
Amortization of Intangible Assets	1,183		1,183
STENDRA/SPEDRA
Geographic Information
Revenues	1,636	2,709	3,904	12,101
Cost of goods sold (excluding amortization)	1,067	1,989	2,653	5,491
Net Product Revenue
Geographic Information
Revenues	13,250	8,518	22,882	26,138
Net Product Revenue | Qsymia
Geographic Information
Revenues	11,134	8,518	20,766	26,138
Net Product Revenue | PANCREAZE
Geographic Information
Revenues	2,116		2,116
Royalty Revenue
Geographic Information
Revenues	668	590	1,253	1,170
Royalty Revenue | PANCREAZE
Geographic Information
Revenues	74		74
Royalty Revenue | STENDRA/SPEDRA
Geographic Information
Revenues	594	590	1,179	1,170
Supply Revenue
Geographic Information
Revenues	1,042	2,119	2,725	5,931
Supply Revenue | STENDRA/SPEDRA
Geographic Information
Revenues	$ 1,042	$ 2,119	$ 2,725	5,931
License Revenue
Geographic Information
Revenues				5,000
License Revenue | STENDRA/SPEDRA
Geographic Information
Revenues				$ 5,000