Quarterly report pursuant to Section 13 or 15(d)

Organization and Summary of Significant Accounting Policies (Details Textuals)

v3.8.0.1
Organization and Summary of Significant Accounting Policies (Details Textuals) - USD ($)
$ / shares in Units, shares in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Jun. 30, 2016
New Accounting Pronouncement, Early Adoption [Line Items]          
Income tax provision (benefit) $ (6,276,000) $ 1,084,000 $ (33,770,000) $ 2,155,000  
Net Income (Loss) Attributable to Parent $ (9,167,000) $ 9,679,000 $ 10,261,000 $ 52,944,000  
Basic $ (0.14) $ 0.15 $ 0.16 $ 0.83  
Diluted $ (0.14) $ 0.14 $ 0.15 $ 0.79  
Diluted 66,712 67,832 69,491 67,354  
Adjustments for New Accounting Pronouncement [Member]          
New Accounting Pronouncement, Early Adoption [Line Items]          
New accounting pronouncement impact to retained earnings         $ 0