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Stock-Based Compensation Plans and Employee Benefits (Tables)
12 Months Ended
Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of changes in non-vested restricted stock units
Changes in non-vested restricted stock units ("Units") during the year ended December 31, 2016 were as follows (number of shares and $ in thousands, except per share amounts):
 
 
Number
of Shares
 
Weighted Average
Grant Date
Fair Value
Per Share
 
Aggregate
Intrinsic
Value
Non-vested as of December 31, 2015
 
426

 
$
12.90

 
$
4,991

Granted
 
223

 
$
10.11

 
 
Vested
 
(277
)
 
$
10.91

 
 
Forfeited
 
(82
)
 
$
17.49

 
 
Non-vested as of December 31, 2016
 
290

 
$
11.33

 
$
3,578