Revenue (Revenue and Cost Of Goods Sold By Source) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Geographic Information
Total revenue	$ 16,146	$ 11,900
Cost of goods sold (excluding amortization)	4,308	2,630
Amortization of Intangible Assets	3,638	91
Qsymia
Geographic Information
Total revenue	8,423	9,632
Cost of goods sold (excluding amortization)	1,382	1,044
Amortization of Intangible Assets	91	91
PANCREAZE
Geographic Information
Total revenue	5,644
Cost of goods sold (excluding amortization)	1,461
Amortization of Intangible Assets	3,547
STENDRA/SPEDRA
Geographic Information
Total revenue	2,079	2,268
Cost of goods sold (excluding amortization)	1,465	1,586
Net Product Revenue
Geographic Information
Total revenue	13,497	9,632
Net Product Revenue \| Qsymia
Geographic Information
Total revenue	8,423	9,632
Net Product Revenue \| PANCREAZE
Geographic Information
Total revenue	5,074
Supply Revenue
Geographic Information
Total revenue	1,604	1,683
Supply Revenue \| STENDRA/SPEDRA
Geographic Information
Total revenue	1,604	1,683
Royalty Revenue
Geographic Information
Total revenue	1,045	585
Royalty Revenue \| PANCREAZE
Geographic Information
Total revenue	570
Royalty Revenue \| STENDRA/SPEDRA
Geographic Information
Total revenue	$ 475	$ 585

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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