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2314301 - Disclosure - STOCK BASED COMPENSATION (Tables)
(http://www.allegiancebank.com/role/StockBasedCompensationTables)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001642081 (http://www.sec.gov/CIK)
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
 
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
The Black-Scholes pricing model utilizes certain assumptions noted in the table below.
 
2016
 
2015
 
2014
Risk-free interest rate
1.76
%
 
1.99
%
 
2.70
%
Expected term
10.00

 
10.00

 
10.00

Expected stock price volatility
34.60
%
 
18.06
%
 
17.72
%
Dividend yield
—

 
—

 
—

  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
A summary of the activity in the stock option plan during the years ended December 31, 2016 and 2015 is set forth below:  
 
Number of
Options
 
Weighted
Average
Exercise
Price
 
Weighted
Average
Remaining
Contractual Term
 
Aggregate
Intrinsic
Value
 
(In thousands)
 
 
 
(In years)
 
(In thousands)
Options outstanding, January 1, 2015
694

 
$
15.60

 
6.57
 
$
4,437

Options granted
299

 
22.09

 
 
 
 

Options exercised
—

 
 N/A

 
 
 
 

Options forfeited
(24
)
 
22.00

 
 
 
 

Options outstanding, December 31, 2015
969

 
$
17.45

 
6.62
 
$
6,006

Options granted
107

 
22.83

 
 
 
 

Options exercised
(116
)
 
15.42

 
 
 
 

Options forfeited
(25
)
 
21.56

 
 
 
 

Options outstanding, December 31, 2016
935

 
$
18.21

 
6.23
 
$
16,773

Options vested and exercisable, December 31, 2016
525

 
$
15.45

 
4.66
 
$
10,863

  
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Intrinsic Value [Table Text Block]
Information related to the stock option plan during each year is as follows:
 
2016
 
2015
 
2014
 
(In thousands)
Intrinsic value of options exercised
$
1,128

 
$
—

 
$
202

Cash received from option exercises
1,782

 
—

 
407

Weighted average fair value of options granted
$
10.51

 
$
6.78

 
$
6.79

  
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]
A summary of the activity of the nonvested shares of restricted stock as of December 31, 2016 and 2015 including changes during the years then ended is as follows:
 
Number of
Shares
 
Weighted
Average Grant
Date Fair
Value
 
(Shares in thousands)
Nonvested share awards outstanding, January 1, 2015
27

 
$
18.23

Share awards granted
4

 
22.00

Share awards vested
(13
)
 
17.34

Unvested share awards forfeited
—

 
—

Nonvested share awards outstanding, December 31, 2015
18

 
19.68

Share awards granted
15

 
17.52

Share awards vested
(9
)
 
19.45

Unvested share awards forfeited
—

 
—

Nonvested share awards outstanding, December 31, 2016
24

 
$
18.31