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Stock-Based Incentive Plans (Tables)
 12 Months Ended
Dec. 31, 2018
Share-based Compensation [Abstract]  
Schedule of Other Share-based Compensation, Activity [Table Text Block] Compensation expense for the periods presented was comprised of the following:
 
 
2018
 
2017
 
 
 
 
 
Restricted stock awards with time-based service conditions
 
$
460

 
$
1,025

Restricted stock unit awards with time-based service conditions
 
1

 
161

Restricted stock awards with performance-based vesting conditions
 
—

 
121

Stock options with time-based service vesting conditions
 
1,672

 
2,165

Stock options with market-based vesting conditions
 
—

 
2,372

Profits interests units
 
(2,450
)
 
3,041

Total compensation expense
 
$
(317
)
 
$
8,885
Share-based Compensation Arrangement by Share-based Payment Award, Grants in Period [Text Block] Stock-based award grant activity for the periods presented was as follows:
 
 
2018
 
2017
 
 
Shares
 
Aggregate fair value (in thousands)
 
Shares
 
Aggregate fair value (in thousands)
Restricted stock awards with time-based service conditions
 
102,000

 
$
386

 
—

 
$
—

Stock options with time-based service vesting conditions
 
930,000

 
1,588

 
1,368,000

 
2,930

Total incentive awards granted
 
1,032,000

 
$
1,974

 
1,368,000

 
$
2,930
Stock Options Activity The following table summarizes stock option activity for the Plans for the year ended December 31, 2018:
 
 
 
 
Weighted-Average
 
 
 
 
Options
 
Exercise
Price
 
Remaining
Contractual Term
 
Aggregate
Intrinsic Value
Outstanding at December 31, 2017
 
5,830,000

 
$
5.13

 
 
 
 
Granted
 
930,000

 
$
3.91

 
 
 
 
Exercised
 
(83,000
)
 
$
3.12

 
 
 
 
Expired/forfeited
 
(3,168,000
)
 
$
5.00

 
 
 
 
Outstanding at December 31, 2018
 
3,509,000

 
$
4.96

 
4.1 years
 
$
—

Vested
 
2,339,000

 
$
4.82

 
3.2 years
 
$
—

Exercisable at December 31, 2018
 
2,339,000

 
$
4.82

 
3.2 years
 
$
—
Nonvested Restricted Stock Activity The following table summarizes nonvested restricted share activity for the year ended December 31, 2018:
 
 
Nonvested
Restricted Shares
 
Weighted
Average Grant Date Fair Value
Nonvested restricted stock at December 31, 2017
 
123,000

 
$
4.77

Granted
 
102,000

 
$
3.79

Vested
 
(225,000
)
 
$
4.32

Canceled
 
—

 
$
—

Nonvested restricted stock at December 31, 2018
 
—

 
$
—
Restricted Stock Units Activity The following table summarizes restricted stock unit activity for the year ended December 31, 2018:
 
 
Restricted
Stock Units
 
Weighted
Average Grant Date Fair Value
Nonvested restricted stock units outstanding at December 31, 2017
 
2,000

 
$
16.72

Vested
 
(2,000
)
 
$
16.72

Nonvested restricted stock units outstanding at December 31, 2018
 
—

 
$
—

Vested restricted stock units outstanding at December 31, 2018
 
31,000

 
$
15.43