Share Capital (Details) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended
	Aug. 31, 2011	Sep. 30, 2014	May 16, 2014	May 15, 2014	Dec. 31, 2013
Equity [Abstract]
Common stock, shares authorized		300,000,000	300,000,000	150,000,000	150,000,000
Common stock, par value		$ 0.01	$ 0.01		$ 0.01
Common stock, shares issued		134,680,164			134,580,208
Common stock, held in treasury		1,220,544			1,252,922
Stock repurchase program, authorized amount	$ 100,000
Shares repurchased		1,357,085			1,252,922