Revenue By Geography (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
Qsymia
Geographic Information
Revenues	11,134	8,518	20,766	26,138
PANCREAZE
Geographic Information
Revenues	2,190		2,190
STENDRA/SPEDRA
Geographic Information
Revenues	1,636	2,709	3,904	12,101
U.S.
Geographic Information
Revenues	13,775	8,518	23,953	34,913
ROW
Geographic Information
Revenues	1,185	2,709	2,907	3,326
Germany
Geographic Information
Revenues	1,100	2,700	2,800	3,300
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
Net Product Revenue | U.S. | Qsymia
Geographic Information
Revenues	11,134	8,518	20,766	26,138
Net Product Revenue | U.S. | 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
Royalty Revenue | ROW | PANCREAZE
Geographic Information
Revenues	74		74
Royalty Revenue | ROW | 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
Supply Revenue | U.S. | STENDRA/SPEDRA
Geographic Information
Revenues	525		1,071	3,775
Supply Revenue | ROW | STENDRA/SPEDRA
Geographic Information
Revenues	$ 517	$ 2,119	$ 1,654	2,156
License Revenue
Geographic Information
Revenues				5,000
License Revenue | STENDRA/SPEDRA
Geographic Information
Revenues				5,000
License Revenue | U.S. | STENDRA/SPEDRA
Geographic Information
Revenues				$ 5,000