Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Basic EPS- Income:
Net income (loss) available to common stockholders, continuing operations	$ 6,811	$ 13,695
Net income (loss) available to common stockholders, discontinued operations	$ 257	$ (255)
Basic EPS - Shares:
Shares outstanding, basic (in shares)	43,910	38,851
Basic EPS - Per Share Amount:
Net income from continuing operations	$ 0.16	$ 0.35
Effect of dilutive securities - Shares:
Stock compensation plans (in shares)	364	604
Diluted EPS - Income
Diluted EPS, continuing operations	$ 6,811	$ 13,695
Diluted EPS, discontinued operations	$ 257	$ (255)
Diluted EPS - Shares
Shares outstanding, diluted (in shares)	44,274	39,455
Diluted EPS - Per Share Amount
Diluted earnings per share - continuing operations (in dollars per share)	$ 0.15	$ 0.35
Diluted EPS, discontinued operations (in dollars per share)	$ 0.01	$ (0.01)

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