Subsequent Events (Details Textuals) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended			27 Months Ended	2 Months Ended		1 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Feb. 20, 2014 Subsequent Event [Member]	Jan. 28, 2014 Subsequent Event [Member]	Jan. 31, 2014 Subsequent Event [Member] Restricted Stock [Member] Rate	Jan. 03, 2014 Subsequent Event [Member] Restricted Stock [Member]
Subsequent Event [Line Items]
Repurchase of common stock, shares	16,468,648	16,978,008	14,112,610	47,559,266	11,800,000
Total amount repurchased	$ 277,768	$ 266,657	$ 195,227	$ 739,652	$ 191,600
Treasury Stock Acquired, Average Cost Per Share	$ 16.87	$ 15.71	$ 13.83	$ 15.55	$ 16.17
Awards Granted							1,633,898
Value (per share) of restricted stock grant								$ 16.55
Equity award vesting percentage							33.00%
Dividends Payable, Amount Per Share						$ 0.0625