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Stock-Based Compensation | 3 Months Ended
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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 |
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(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 |

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -URI http://asc.fasb.org/subtopic&trid=2208855 + Details
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