Earnings Per Common Share (EPS) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share, Basic and Diluted [Abstract]
Net Income, Basic EPS									$ 16,570	$ 19,710	$ 23,044
Shares, Basic EPS									42,607,000	42,176,000	39,086,000
Basic (in dollars per share)	$ 0.15	$ 0.13	$ 0.09	$ 0.02	$ 0.02	$ 0.17	$ 0.14	$ 0.14	$ 0.39	$ 0.47	$ 0.59
Effect of dilutive stock options and warrants									277,000	434,000	647,000
Net Income, Diluted EPS									$ 16,570	$ 19,710	$ 23,044
Shares, Diluted EPS									42,884,000	42,610,000	39,733,000
Diluted (in dollars per share)	$ 0.15	$ 0.13	$ 0.09	$ 0.02	$ 0.01	$ 0.17	$ 0.14	$ 0.14	$ 0.39	$ 0.46	$ 0.58
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount									1,823,000	1,588,000	909,000