CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues:
Product sales, net	$ 19,853	$ 15,422
Research and development services and other income	38	235
Total revenues	19,891	15,657
Costs and Expenses:
Cost of revenues	8,957	7,702
Selling, general and administrative expenses	4,299	3,407
Product development and research expenses	3,668	3,711
Total costs and expenses	16,924	14,820
Operating income (loss)	2,967	837
Other Income (Expense):
Foreign currency exchange gain	1,079	1,553
Interest and other expense, net	(3,132)	(3,318)
Income (loss) before income tax expense	914	(928)
Income tax expense	83	22
Net income (loss)	$ 831	$ (950)
Basic and diluted earnings (loss) per share (in dollars per share)	$ 0.02	$ (0.02)
Weighted average shares of common stock outstanding:
Basic and diluted shares (in shares)	53,195,580	53,031,351