Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Reconciliation of basic to diluted weighted average shares outstanding
Net income	$ 3,353	$ 6,976
Net weighted average common shares outstanding, basic (in shares)	87,436,000	87,138,000
Plus: net effect of dilutive stock options (in shares)	336,000	1,485,000
Plus: net effect of dilutive restricted common shares (in shares)	163,000	203,000
Weighted average common shares outstanding, diluted (in shares)	87,935,000	88,826,000
Income per common share - Basic (in dollars per share)	$ 0.04	$ 0.08
Income per common share - Diluted (in dollars per share)	$ 0.04	$ 0.08
Stock options
Anti-dilutive securities
Anti-dilutive securities excluded from diluted earnings per share calculations (in shares)	1,434,314	594,318
Restricted Stock Units
Anti-dilutive securities
Anti-dilutive securities excluded from diluted earnings per share calculations (in shares)	25,541	64,054