Quarterly Financial Data (unaudited, in thousands, except per share data)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Data (unaudited, in thousands, except per share data) [Abstract]

Quarterly Financial Data (unaudited, in thousands, except per share data)

15. Quarterly Financial Data (unaudited, in thousands, except per share data)

2015	Fourth Quarter		Third Quarter		Second Quarter		First Quarter
Net revenue:
Product	$	37,950	$	36,827	$	37,398	$	34,441
License, royalty & collaboration		135		127		152		170
Total net revenue		38,085		36,954		37,550		34,611
Selected costs and expenses:
Costs of goods sold		12,814		12,133		12,660		11,296
Operating earnings		160		4,368		5,648		3,423
Net earnings		1,557		2,973		3,727		2,207
Basic net earnings per share	$	0.09	$	0.17	$	0.22	$	0.13
Diluted net earnings per share	$	0.09	$	0.16	$	0.21	$	0.12

2014	Fourth Quarter		Third Quarter		Second Quarter		First Quarter
Net revenue:
Product	$	33,449	$	31,766	$	30,606	$	29,845
License		137		163		71		62
Total net revenue		33,586		31,929		30,677		29,907
Selected costs and expenses:
Costs of goods sold		11,542		10,291		10,283		9,583
Operating earnings		5,312		5,213		5,031		4,371
Net earnings		4,160		2,570		3,205		2,799
Basic net earnings per share	$	0.24	$	0.15	$	0.19	$	0.17
Diluted net earnings per share	$	0.23	$	0.15	$	0.18	$	0.16