Earnings Per Share - (Computations for Basic and Diluted Earnings (Loss) Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Income (loss) from continuing operations	$ 11,016	$ (15,368)	$ 542
Loss on discontinued operations, net of income taxes	(17,309)	(15,892)	(8,719)
NET LOSS	$ (6,293)	$ (31,260)	$ (8,177)
Weighted-average common shares outstanding — basic	62,236	61,365	60,744
Effect of stock options and restricted stock units	1,371		623
Weighted-average common shares outstanding — diluted	63,607	61,365	61,367
Earnings (loss) per share from continuing operations — basic	$ 0.18	$ (0.25)	$ 0.01
Earnings (loss) per share from continuing operations — diluted	$ 0.17	$ (0.25)	$ 0.01

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

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+ Details

- Definition

The amount of net income (loss) derived from continuing operations during 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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+ Details

- Definition

Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details