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Stock Compensation Plans and Stock Based Compensation (Details Textual)
12 Months Ended
Dec. 31, 2016
USD ($)
shares
One Thousand Nine Hundred Ninety Five Directors Stock Options Plan [Member]  
Stock Compensation Plans (Textual) [Abstract]  
Number of shares available for issuance under equity incentive plan 3,550,000
Minimum vesting period 1 year
Term of options granted under Directors' Plan 10 years
Employee stock purchase plans [Member]  
Stock Compensation Plans (Textual) [Abstract]  
Number of shares available for issuance under Employee Stock Purchase Plan 74,000,000
Percentage of lower of fair market value at beginning or end of applicable offering period used for calculating price of common stock to be purchased by employees 85.00%
Purchase period for common stock 6 months
Employee Stock Purchase Plan with Offering Period Commencing on August 1, 2009 [Member]  
Stock Compensation Plans (Textual) [Abstract]  
Maximum percentage of annual base earnings plus bonuses and commissions for which common stock can be purchased by employees 5.00%
Maximum amount for which common stock can be purchased by employees in any calendar year | $ $ 7,058.82
Employee Stock Purchase Plan with Offering Period Commencing on February 1, 2014 [Member] [Member]  
Stock Compensation Plans (Textual) [Abstract]  
Maximum percentage of annual base earnings plus bonuses and commissions for which common stock can be purchased by employees 7.00%
Maximum amount for which common stock can be purchased by employees in any calendar year | $ $ 9,411.76
2014 Omnibus Equity Incentive Plan [Member]  
Stock Compensation Plans (Textual) [Abstract]  
Additional shares authorized and available for issuance under equity incentive plan 6,000,000
Number of shares available for issuance under equity incentive plan 29,000,000
Expiration period from date of grant for options granted 7 years
Restricted stock [Member] | 2014 Omnibus Equity Incentive Plan [Member] | Maximum [Member]  
Stock Compensation Plans (Textual) [Abstract]  
Minimum vesting period 4 years
Restricted stock [Member] | 2014 Omnibus Equity Incentive Plan [Member] | Minimum [Member]  
Stock Compensation Plans (Textual) [Abstract]  
Minimum vesting period 3 years
Stock options [Member]  
Stock Compensation Plans (Textual) [Abstract]  
Total unrecognized compensation expense , net of estimates forfeitures | $ $ 10,300,000
Weighted-average vesting period over which unrecognized compensation expense will be recognized 2 years 5 months
Stock options [Member] | 2014 Omnibus Equity Incentive Plan [Member] | Maximum [Member]  
Stock Compensation Plans (Textual) [Abstract]  
Minimum vesting period 4 years
Stock options [Member] | 2014 Omnibus Equity Incentive Plan [Member] | Minimum [Member]  
Stock Compensation Plans (Textual) [Abstract]  
Minimum vesting period 3 years
Restricted Stock [Member]  
Stock Compensation Plans (Textual) [Abstract]  
Performance-based stock awards, grants in period 7,145,000
Total unrecognized compensation expense , net of estimates forfeitures | $ $ 198,000,000
Weighted-average vesting period over which unrecognized compensation expense will be recognized 2 years 4 months
Restricted Stock [Member] | Maximum [Member]  
Stock Compensation Plans (Textual) [Abstract]  
Minimum vesting period 4 years
Restricted Stock [Member] | Minimum [Member]  
Stock Compensation Plans (Textual) [Abstract]  
Minimum vesting period 3 years
Performance Based Restricted Stock Grants [Member]  
Stock Compensation Plans (Textual) [Abstract]  
Performance-based stock awards, grants in period 1,250,000