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Stock-Based Compensation
 3 Months Ended
Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock-Based Compensation 16. Stock-Based Compensation
 
We have granted restricted stock, restricted stock units, and performance based restricted stock units to employees and non-employee directors under the Archrock, Inc. 2013 Stock Incentive Plan.

The following table presents restricted stock, restricted stock unit, performance-based restricted stock unit and cash- settled performance unit activity during the three months ended March 31, 2019:
 
Shares
(in thousands)
 
Weighted
Average
Grant Date
Fair Value
Per Share
Non-vested awards, January 1, 2019
1,728

 
$
9.68

Granted
1,380

 
10.01

Vested
(379
)
 
6.13

Canceled
(15
)
 
9.99

Non-vested awards, March 31, 2019 (1)
2,714

 
10.34

——————
(1) 
Non-vested awards as of March 31, 2019 are comprised of 376,000 cash-settled restricted stock units and cash-settled performance units and 2,338,000 restricted shares and stock-settled performance units.
 
As of March 31, 2019, we expect $21.5 million of unrecognized compensation cost related to unvested restricted stock, stock-settled restricted stock units, performance units, cash-settled restricted stock units and cash-settled performance units to be recognized over the weighted-average period of 2.4 years.

Total stock-based compensation expense consisted of the following (in thousands):
 
Three Months Ended
March 31,
 
2019
 
2018
Equity awards
$
2,357

 
$
1,794

Liability awards
966

 
301

Total stock-based compensation
$
3,323

 
$
2,095