Rendering

Component: (Network and Table)
Network
2318301 - Disclosure - Stock-based Compensation Expense (Tables)
(http://www.albemarle.com/role/StockBasedCompensationExpenseTables)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000915913 (http://www.sec.gov/CIK)
Share-based Compensation [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
Share-based Compensation [Abstract]
 
Fixed-Price Stock Options
The following table summarizes information about the Company’s fixed-price stock options as of and for the year ended December 31, 2016:
 
Shares
 
Weighted-Average Exercise Price
 
Weighted-Average Remaining Contractual Term (Years)
 
Aggregate Intrinsic Value
(in thousands)
Outstanding at December 31, 2015
1,676,927

 
$
50.76

 
6.1
 
$
14,152

Granted
141,661

 
56.56

 
 
 
 
Exercised
(212,343
)
 
44.28

 
 
 
 
Forfeited
(64,001
)
 
59.03

 
 
 
 
Outstanding at December 31, 2016
1,542,244

 
$
51.85

 
5.5
 
$
52,798

Exercisable at December 31, 2016
858,291

 
$
45.63

 
3.7
 
$
34,720

  
Weighted-Average Assumptions used to Estimate Fair Value of Each Option Granted
The fair value of each option granted during the years ended December 31, 2016, 2015 and 2014 was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions:
 
Year Ended December 31,
 
2016
 
2015
 
2014
Dividend yield
1.84
%
 
1.80
%
 
1.71
%
Volatility
33.08
%
 
32.92
%
 
33.03
%
Average expected life (years)
6

 
6

 
6

Risk-free interest rate
1.96
%
 
2.17
%
 
2.94
%
Fair value of options granted
$
16.06

 
$
16.04

 
$
19.56

  
Activity in Performance Unit Awards
The following table summarizes activity in performance unit awards as of and for the year ended December 31, 2016:
 
Shares
 
Weighted-Average Grant Date Fair Value Per Share
Nonvested, beginning of period
497,205

 
$
62.04

Granted
139,948

 
78.03

Vested
(80,970
)
 
61.75

Forfeited
(61,492
)
 
63.61

Nonvested, end of period
494,691

 
66.42

  
Activity in Non-Performance Based Restricted Stock Awards
The following table summarizes activity in non-performance based restricted stock and restricted stock unit awards as of and for the year ended December 31, 2016:
 
Shares
 
Weighted-Average Grant Date Fair Value Per Share
Nonvested, beginning of period
118,121

 
$
58.62

Granted
156,662

 
56.43

Vested
(53,875
)
 
57.34

Forfeited
(40,252
)
 
54.65

Nonvested, end of period
180,656

 
57.99