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Stock-based Compensation (Tables)
 9 Months Ended
Sep. 30, 2019
Share-based Payment Arrangement [Abstract]  
Schedule of Nonvested Restricted Stock Units Activity
The following summarizes our RSU activity (units in thousands):
 
Number of Units
 
Weighted Average Grant-Date Fair Value
 
 
 
 
Outstanding at December 31, 2017
307

 
$
9.84

Units granted
70

 
5.76

Units vested
(89
)
 
10.02

Units forfeited
(15
)
 
8.81

Outstanding at September 30, 2018
273

 
8.79

Units vested
(6
)
 
7.17

Units forfeited
(3
)
 
9.71

Outstanding at December 31, 2018
264

 
8.91

Units vested
(95
)
 
9.67

Units forfeited
(15
)
 
8.23

Outstanding at September 30, 2019
154

 
$
8.51