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Stock-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2019
Share-based Payment Arrangement [Abstract] |
Schedule of Restricted Stock, Restricted Stock Unit, Performance Unit, Cash Settled Restricted Stock Unit and Cash Settled Performance Unit Activity | The following table presents restricted stock, restricted stock unit, performance-based restricted stock unit and cash-settled performance unit activity during the six months ended June 30, 2019:
| Shares (in thousands) |  | Weighted Average Grant Date Fair Value Per Share
Non-vested awards, January 1, 2019 | 1,728 |  |  | $ | 9.68 |
Granted | 1,383 |  |  | 10.01 |
Vested | (402 | ) |  | 6.33 |
Canceled | (153 | ) |  | 10.33 |
Non-vested awards, June 30, 2019 (1)(2) | 2,556 |  |  | 10.35 |
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(1) | Non-vested awards as of June 30, 2019 are comprised of 451,000 cash-settled restricted stock units and cash-settled performance units and 2,105,000 restricted shares and stock-settled performance units.
(2) During the three months ended June 30, 2019, the settlement terms of 99,631 performance units, with grant dates in 2018 and 2019, were modified from settlement in stock to cash. The change in award settlement from stock to cash was the only modification to these awards; the vesting, forfeiture and all other terms and conditions were unchanged. The modification resulted in a $0.2 million reclassification from additional paid-in capital to other current liabilities in our condensed consolidated balance sheets and had an immaterial impact on our condensed consolidated statements of operations.
Schedule of Allocation of Total Stock-based Compensation | Total stock-based compensation expense consisted of the following (in thousands):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Equity awards | $ | 1,512 |  |  | $ | 1,969 |  |  | $ | 3,869 |  |  | $ | 3,763 |
Liability awards | 640 |  |  | 666 |  |  | 1,606 |  |  | 967 |
Total stock-based compensation | $ | 2,152 |  |  | $ | 2,635 |  |  | $ | 5,475 |  |  | $ | 4,730 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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