Consolidated Condensed Statements of Income - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Product revenues	$ 249,267	$ 215,714
Cost of sales	164,107	147,472
Gross margin	85,160	68,242
Operating expenses:
Net research and development expenses	19,505	15,696
Acquisition transaction expenses		37
Selling, general and administrative expenses	30,806	22,624
Total operating expenses	50,311	38,357
Operating income	34,849	29,885
Interest expense	(1,122)	(677)
Foreign currency loss	(1,329)	(1,835)
Other income	236	365
Earnings before income tax	32,634	27,738
Income tax expense	7,232	15,845
Net income	$ 25,402	$ 11,893
Basic earnings per share	$ 0.69	$ 0.33
Diluted earnings per share	$ 0.69	$ 0.33
Weighted average number of shares – basic	36,619,825	36,356,973
Weighted average number of shares – diluted	36,739,282	36,550,863

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e1043-128460