Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Net Income
Income from continuing operations	$ 1,845	$ 6,319
Income from discontinued operations	0	348
Net income	$ 1,845	$ 6,667	$ 13,370
Basic earnings per common share
Weighted-average common shares outstanding used in earnings per share computations	62,686	62,471
Continuing operations (in dollars per share)	$ 0.03	$ 0.10
Discontinued operations (in dollars per share)	$ 0.00	$ 0.01
Basic earnings per common share (in dollars per share)	$ 0.03	$ 0.11
Diluted earnings per common share
Shares used in diluted earnings per share computations	62,971	62,669
Continuing operations (in dollars per share)	$ 0.03	$ 0.10
Discontinued operations (in dollars per share)	$ 0.00	$ 0.01
Diluted earnings per common share (in dollars per share)	$ 0.03	$ 0.11
Computation of Shares Used in Earnings Per Share Computations
Weighted-average common shares outstanding (in shares)	62,686	62,471
Weighted-average common equivalent shares - dilutive effect of stock options and awards	285	198
Shares used in diluted earnings per share computations	62,971	62,669