Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2014
Stockholders' Equity
Common stock, shares outstanding (in shares)	100,187,405				100,187,405
Dividends declared and paid
Dividends Per Share (in dollars per share)	$ 0.19	$ 0.19	$ 0.19	$ 0.19
Total Dividends	$ 19,035	$ 19,036	$ 19,035	$ 19,036