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Share-based Compensation and Equity (Tables)

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

Summary of Share-Based Compensation Expense

Share-based compensation expense was as follows:

For the years ended December 31,			2020						2019						2018
Continuing operations
Stock options, net of estimated forfeitures			$	1,291					$	3,101					$	(3,610)
Restricted stock awards			8,957						7,224						10,184
Total continuing operations			$	10,248					$	10,325					$	6,574
Discontinued operations
Share-based compensation expense for discontinued operations			3,050						2,669						4,217
Total continuing and discontinued operations			$	13,298					$	12,994					$	10,791

Summary of Stock Options Activity

The following tables summarize the stock option activity and the assumptions used to record the related share-based compensation expense for the years ended December 31, 2020, 2019 and 2018:

						2020												2019												2018
						Options			Weighted Average Exercise Price			Aggregate Intrinsic Value						Options			Weighted Average Exercise Price			Aggregate Intrinsic Value						Options			Weighted Average Exercise Price			Aggregate Intrinsic Value
Outstanding at January 1						5,388			$	18.18		$	3,396					9,020			$	18.79		$	744					9,903			$	19.30		$	—
Granted						—			—									698			14.99									717			14.27
Exercised						(860)			17.60			2,353						(1,569)			16.95			794						—			—			—
Forfeited or expired						(1,100)			19.66									(2,761)			20.06									(1,600)			19.92
Outstanding at December 31						3,428			17.85			159						5,388			18.18			3,396						9,020			18.79			744
Exercisable at December 31						3,292			17.97			159						4,846			18.50			2,136						7,878			19.11			265
Vested and expected to vest						3,426			17.85			159						5,274			18.20			3,344						8,990			18.80			722

Summary of Stock Option Plans, By Exercise Price Range

			Options Outstanding									Options Exercisable									Assumption Range*
Exercise Prices			Number of Shares			Weighted Average Remaining Contractual Terms (Years)						Number of Shares			Weighted Average Remaining Contractual Terms (Years)						Risk-Free Interest Rate			Expected Terms in Years			Expected Volatility
Year Ended December 31, 2020
$13.97 - $15.55			748			6.84						625			6.58						1.99% - 3.05%			3.25 - 5.91			38.29% - 64.18%
$16.38 - $17.89			2,247			2.72						2,235			2.68						1.38% -2.34%			3.20 - 7.12			35.20% - 58.84%
$21.00			146			0.70						146			0.70						1.81%			4.00			57.79%
$22.88 - $31.92			287			0.76						287			0.76						0.73% - 2.86%			4.00 - 6.52			39.03% - 53.80%
Year Ended December 31, 2019
$13.97 - $15.55			944			7.89						524			7.06						1.81% - 3.05%			3.25 - 5.91			38.29% - 64.18%
$17.00 - $19.56			3,597			3.12						3,475			2.95						1.38% - 2.94%			2.60 - 10.00			35.20% - 58.84%
$21.00 - $21.52			330			1.09						330			1.09						0.68% - 2.61%			3.79 - 6.55			38.16% - 57.79%
$22.32 - $31.92			517			1.44						517			1.44						0.60% - 3.03%			3.18 - 6.52			36.93% - 53.80%
Year Ended December 31, 2018
$13.97 - $15.55			674			8.31						250			7.98						1.81% - 3.05%			3.25 - 5.91			49.98% - 64.18%
$17.00 - $19.56			5,730			3.69						5,013			3.50						0.49% - 2.94%			2.60 - 10.00			36.04% - 69.74%
$21.00 - $21.52			1,917			1.39						1,916			1.39						0.68% - 2.60%			2.92 - 6.52			38.16% - 69.74%
$22.32 - $31.92			699			2.53						699			2.53						0.60% - 2.93%			4.00 - 6.52			36.93% - 53.80%

* The expected dividend yield is zero for all options in all years.

Summary of Non-Vested Restricted Stock And Restricted Stock Units Activity

The following table summarizes the non-vested restricted stock and restricted stock units activity for the years ended December 31, 2020, 2019 and 2018:

						2020												2019												2018
						Shares						Weighted Average Grant Date Fair Value						Shares						Weighted Average Grant Date Fair Value						Shares						Weighted Average Grant Date Fair Value
Non-vested at January 1						1,251						$	14.69					1,895						$	15.31					1,650						$	19.74
Granted						969						15.80						1,003						15.10						1,306						14.11
Vested						(861)						14.11						(765)						16.18						(853)						21.66
Forfeited						(359)						15.95						(882)						15.20						(208)						17.41
Non-vested at December 31						1,000						15.81						1,251						14.69						1,895						15.31

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