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Earnings per Common Share (Tables)
 12 Months Ended
Dec. 31, 2015
Earnings Per Share [Abstract]  
Schedule of Earnings per Common Share
The following schedule summarizes the information used to compute earnings per common share:
 
Years ended December 31,
(in thousands, except per share data)
2015
 
2014
 
2013
Net income attributable to the owners of QIAGEN N.V.
$
127,103

 
$
116,634

 
$
69,073

 
 
 
 
 
 
Weighted average number of common shares used to compute basic net income per common share
233,483

 
232,644

 
234,000

Dilutive effect of stock options and restrictive stock units
3,539

 
3,573

 
3,023

Dilutive effect of outstanding warrants
136

 
5,321

 
5,152

Weighted average number of common shares used to compute diluted net income per common share
237,158

 
241,538

 
242,175

Outstanding options and awards having no dilutive effect, not included in above calculation
37

 
422

 
1,616

Outstanding warrants having no dilutive effect, not included in above calculation
26,071

 
32,505

 
21,315

 
 
 
 
 
 
Basic earnings per common share attributable to the owners of QIAGEN N.V.
$
0.54

 
$
0.50

 
$
0.30

Diluted earnings per common share attributable to the owners of QIAGEN N.V.
$
0.54

 
$
0.48

 
$
0.29