Earnings Per Share (Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Income (numerator) [Abstract]
Net earnings (loss) available to common shareholders	$ 12,591	$ 17,930
Diluted earnings (loss) per share, Net income (loss) available to common shareholders	$ 12,591	$ 17,930
Shares (denominator) [Abstract]
Basic earnings (loss) per share, Net income (loss) available to common shareholders (in shares)	57,220,844	56,522,015
Effect of dilutive securities, Common stock options and restricted stock units (in shares)	705,941	354,647
Diluted earnings (loss) per share, Net income (loss) available to common shareholders (in shares)	57,926,785	56,876,662
Per share amount [Abstract]
Basic earnings (loss) per share, Net income (loss) available to common shareholders (in dollars per share)	$ 0.22	$ 0.32
Net income per share - diluted	$ 0.22	$ 0.32
Continuing Operations [Member]
Income (numerator) [Abstract]
Net earnings (loss) available to common shareholders	$ 13,161	$ 17,411
Diluted earnings (loss) per share, Net income (loss) available to common shareholders	$ 13,161	$ 17,411
Shares (denominator) [Abstract]
Basic earnings (loss) per share, Net income (loss) available to common shareholders (in shares)	57,220,844	56,522,015
Effect of dilutive securities, Common stock options and restricted stock units (in shares)	705,941	354,647
Diluted earnings (loss) per share, Net income (loss) available to common shareholders (in shares)	57,926,785	56,876,662
Per share amount [Abstract]
Basic earnings (loss) per share, Net income (loss) available to common shareholders (in dollars per share)	$ 0.23	$ 0.31
Net income per share - diluted	$ 0.23	$ 0.31
Discontinued Operations [Member]
Income (numerator) [Abstract]
Net earnings (loss) available to common shareholders	$ (570)	$ 519
Diluted earnings (loss) per share, Net income (loss) available to common shareholders	$ (570)	$ 519
Shares (denominator) [Abstract]
Basic earnings (loss) per share, Net income (loss) available to common shareholders (in shares)	57,220,844	56,522,015
Effect of dilutive securities, Common stock options and restricted stock units (in shares)		354,647
Diluted earnings (loss) per share, Net income (loss) available to common shareholders (in shares)	57,220,844	56,876,662
Per share amount [Abstract]
Basic earnings (loss) per share, Net income (loss) available to common shareholders (in dollars per share)	$ (0.01)	$ 0.01
Net income per share - diluted	$ (0.01)	$ 0.01

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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