Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Basic EPS Two Class Method:
Income	$ 6,827	$ 7,549	$ 12,269	$ 15,587	$ (2,442)
Income, share amounts	43,826,000	43,369,000	43,727,000	43,268,000
Earnings Per Share, Basic	$ 0.16	$ 0.17	$ 0.28	$ 0.36
Dilutive Securities:
Dilutive Options, Shares	0	0	0	2,000
Dilutive RSA's, Shares	429,000	192,000	424,000	242,000
Dilutive RSU's, Shares	57,000	51,000	64,000	87,000
Diluted EPS:
Net Income (Loss) Available to Common Stockholders, Diluted	$ 6,827	$ 7,549	$ 12,269	$ 15,587
Weighted Average Number of Shares Outstanding, Diluted	44,312,000	43,612,000	44,215,000	43,599,000
Earnings Per Share, Diluted	$ 0.15	$ 0.17	$ 0.28	$ 0.36
Stock Options [Member]
Earnings Per Share (Textual)
Antidilutive shares excluded from EPS, shares	1,400,000	1,600,000	1,500,000	1,500,000
Restricted Stock [Member]
Earnings Per Share (Textual)
Antidilutive shares excluded from EPS, shares	300,000	300,000	300,000	300,000
Restricted Stock Units (RSUs) [Member]
Earnings Per Share (Textual)
Contingently Issuable Shares Not Included in Diluted EPS	700,000	300,000	700,000	300,000