The table below provides a roll-forward of outstanding RSUs for the years ended December 31, 2020, 2019, and 2018. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Year Ended December 31, | | | 2020 | | 2019 | | 2018 | | (In thousands, except per share data) | | Shares | | Weighted Average Grant Date Fair Value Per Share | | Shares | | Weighted Average Grant Date Fair Value Per Share | | Shares | | Weighted Average Grant Date Fair Value Per Share | | Outstanding at January 1, | | 301 | | | $ | 30.30 | | | 257 | | | $ | 28.90 | | | 221 | | | $ | 23.58 | | | Granted | | 130 | | | $ | 51.82 | | | 206 | | | $ | 30.03 | | | 163 | | | $ | 33.08 | | | Vested | | (152) | | | $ | 30.60 | | | (138) | | | $ | 31.92 | | | (110) | | | $ | 24.93 | | | Issued in exchange | | 16 | | | $ | 52.28 | | | — | | | $ | — | | | — | | | $ | — | | | Cancelled in exchange | | (16) | | | $ | 29.00 | | | — | | | $ | — | | | — | | | $ | — | | | Forfeited or canceled | | (26) | | | $ | 45.59 | | | (24) | | | $ | 35.57 | | | (17) | | | $ | 25.54 | | | Outstanding at December 31, | | 253 | | | $ | 41.67 | | | 301 | | | $ | 30.30 | | | 257 | | | $ | 28.90 | |
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