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Earnings Per Share (Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income (numerator) [Abstract]
Basic earnings (loss) per share, Net income (loss) available to common shareholders	$ 7,281	$ (25,551)	$ 34,108	$ (67,720)
Diluted earnings (loss) per share, Net income (loss) available to common shareholders	$ 7,281	$ (25,551)	$ 34,108	$ (67,720)
Shares (denominator) [Abstract]
Basic earnings (loss) per share, Net income (loss) available to common shareholders (in shares)	55,758,433	47,153,658	55,661,538	40,957,247
Effect of dilutive securities, Common stock options (in shares)	554,405		382,371
Diluted earnings (loss) per share, Net income (loss) available to common shareholders (in shares)	56,312,838	47,153,658	56,043,909	40,957,247
Per share amount [Abstract]
Basic earnings (loss) per share, Net income (loss) available to common shareholders (in dollars per share)	$ 0.13	$ (0.54)	$ 0.61	$ (1.65)
Net income (loss) per share - diluted (in dollars per share)	$ 0.13	$ (0.54)	$ 0.61	$ (1.65)
Continuing Operations [Member]
Income (numerator) [Abstract]
Basic earnings (loss) per share, Net income (loss) available to common shareholders	$ 6,770	$ (1,530)	$ 30,670	$ (29,811)
Diluted earnings (loss) per share, Net income (loss) available to common shareholders	$ 6,770	$ (1,530)	$ 30,670	$ (29,811)
Shares (denominator) [Abstract]
Basic earnings (loss) per share, Net income (loss) available to common shareholders (in shares)	55,758,433	47,153,658	55,661,538	40,957,247
Effect of dilutive securities, Common stock options (in shares)	554,405		382,371
Diluted earnings (loss) per share, Net income (loss) available to common shareholders (in shares)	56,312,838	47,153,658	56,043,909	40,957,247
Per share amount [Abstract]
Basic earnings (loss) per share, Net income (loss) available to common shareholders (in dollars per share)	$ 0.12	$ (0.03)	$ 0.55	$ (0.73)
Net income (loss) per share - diluted (in dollars per share)	$ 0.12	$ (0.03)	$ 0.55	$ (0.73)
Discontinued Operations [Member]
Income (numerator) [Abstract]
Basic earnings (loss) per share, Net income (loss) available to common shareholders	$ 511	$ (24,021)	$ 3,438	$ (37,909)
Diluted earnings (loss) per share, Net income (loss) available to common shareholders	$ 511	$ (24,021)	$ 3,438	$ (37,909)
Shares (denominator) [Abstract]
Basic earnings (loss) per share, Net income (loss) available to common shareholders (in shares)	55,758,433	47,153,658	55,661,538	40,957,247
Effect of dilutive securities, Common stock options (in shares)	554,405		382,371
Diluted earnings (loss) per share, Net income (loss) available to common shareholders (in shares)	56,312,838	47,153,658	56,043,909	40,957,247
Per share amount [Abstract]
Basic earnings (loss) per share, Net income (loss) available to common shareholders (in dollars per share)	$ 0.01	$ (0.51)	$ 0.06	$ (0.92)
Net income (loss) per share - diluted (in dollars per share)	$ 0.01	$ (0.51)	$ 0.06	$ (0.92)

X

- Definition

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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