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Equity
 9 Months Ended
Sep. 30, 2017
Stockholders' Equity Note [Abstract]  
Equity
Equity
The following tables summarize our equity activity for the periods presented (in thousands):
 
 
Granite Construction Incorporated
 
Non-controlling Interests
 
Total Equity
Balance at December 31, 2016
 
$
885,988

 
$
36,603

 
$
922,591

Purchases of common stock1
 
(6,713
)
 
—

 
(6,713
)
Other transactions with shareholders and employees2
 
14,488

 
—

 
14,488

Transactions with non-controlling interests, net
 
—

 
(3,502
)
 
(3,502
)
Net income
 
36,325

 
4,151

 
40,476

Dividends on common stock
 
(15,532
)
 
—

 
(15,532
)
Balance at September 30, 2017
 
$
914,556

 
$
37,252

 
$
951,808

 
 
 
 
 
 
 
 
Balance at December 31, 2015
 
$
839,237

 
$
30,884

 
$
870,121

Purchases of common stock3
 
(4,946
)
 
—

 
(4,946
)
Other transactions with shareholders and employees2
 
11,345

 
—

 
11,345

Transactions with non-controlling interests, net
 
—

 
(1,827
)
 
(1,827
)
Net income
 
40,949

 
5,987

 
46,936

Dividends on common stock
 
(15,439
)
 
—

 
(15,439
)
Balance at September 30, 2016
 
$
871,146

 
$
35,044

 
$
906,190

1Represents 136,000 shares purchased in connection with employee tax withholding for restricted stock units vested under our 2012 Equity Incentive Plan.
2Amounts are comprised primarily of amortized restricted stock units.
3Represents 111,000 shares purchased in connection with employee tax withholding for restricted stock units vested under our 2012 Equity Incentive Plan.