Quarterly report pursuant to Section 13 or 15(d)

Net Income (Loss) Per Share (Details Textuals)

v3.5.0.2
Net Income (Loss) Per Share (Details Textuals)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2016
USD ($)
shares
$ / shares
Jun. 30, 2015
shares
Jun. 30, 2016
USD ($)
class
shares
$ / shares
Jun. 30, 2015
shares
Earnings Per Share [Abstract]        
Tax Adjustments, Settlements, and Unusual Provisions | $ $ 3.5   $ 5.1  
New Accounting Pronouncement Impact, Incremental Dilutive Share Increase 910,000   868,000  
New Accounting Pronouncement Impact to Diluted Earnings-per-share | $ / shares $ 0.04   $ 0.06  
Number Of Class Of Stock Outstanding | class     2  
Common stock equivalents excluded from the calculation of net loss per share (shares) 1,200,000 4,300,000 700,000 5,700,000