Earnings Per Share Schedule of Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income	$ 11,389	$ 4,351
Weighted Average Number of Shares Outstanding, Basic	17,458,136	16,028,516
Weighted Average Number Diluted Shares Outstanding Adjustment	85,537	86,990
Weighted Average Number of Shares Outstanding, Diluted	17,543,673	16,115,506
Earnings Per Share, Basic	$ 0.65	$ 0.27
Earnings Per Share, Diluted	$ 0.65	$ 0.27