Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]
Net income	$ 14,079	$ 19,734
Basic EPS, Shares	87,704	84,770
Basic EPS, Per Share Amount	$ 0.16	$ 0.23
Effect of restricted stock	0	0
Effect of restricted stock, Shares	213	276
Diluted EPS, Net Income	$ 14,079	$ 19,734
Diluted EPS, Shares	87,917	85,046
Diluted EPS, Per Share Amount	$ 0.16	$ 0.23