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Shareholders' Equity and Share-Based Compensation - Restricted Stock Activity (Details) | 12 Months Ended
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Dec. 31, 2020 $ / shares shares
Total Outstanding Units |
Beginning balance, Total Outstanding, Units (in shares) | shares | 889,438
Granted, Total Outstanding Units (in shares) | shares | 197,207
Adjustment for performance achievement, Total Outstanding Units (in shares) | shares | 419
Vested, Total Outstanding Units (in shares) | shares | 0
Forfeited, Total Outstanding Units (in shares) | shares | (61,025)
Distributed, Total Outstanding Units (in shares) | shares | (202,646)
Ending balance, Total Outstanding, Units (in shares) | shares | 823,393
Outstanding Units, Weighted Average Grant Date Fair Value per Unit |
Beginning balance, Total Outstanding, Weighted Average Grant Date Fair Value per Unit (in usd per share) | $ / shares | $ 31.94
Granted, Total Outstanding, Weighted Average Grant Date Fair Value per Unit (in usd per share) | $ / shares | 42.07
Adjustment for performance achievement, Weighted Average Grant Date Fair Value per Unit (in usd per share) | $ / shares | 46.32
Vested, Total Outstanding, Weighted Average Grant Date Fair Value per Unit (in usd per share) | $ / shares | 0
Forfeited, Total Outstanding, Weighted Average Grant Date Fair Value per Unit (in usd per share) | $ / shares | 43.60
Distributed, Total Outstanding, Weighted Average Grant Date Fair Value per Unit (in usd per share) | $ / shares | 34.51
Ending balance, Total Outstanding, Weighted Average Grant Date Fair Value per Unit (in usd per share) | $ / shares | $ 33.88
Vested Units |
Beginning balance, Vested, Units (in shares) | shares | 543,794
Granted, Vested, Units (in shares) | shares | 0
Adjustment for performance achievement, Units (in shares) | shares | 0
Vested, Vested, Units (in shares) | shares | 143,836
Forfeited, Vested, Units (in shares) | shares | 0
Distributed, Vested, Units (in shares) | shares | (202,646)
Ending balance, Vested, Units (in shares) | shares | 484,984
Vested Units, Weighted Average Grant Date Fair Value per Unit |
Beginning balance, Vested, Weighted Average Grant Date Fair Value per Unit (in usd per share) | $ / shares | $ 24.77
Granted, Weighted Average Grant Date Fair Value per Unit (in usd per share) | $ / shares | 0
Adjustment for performance achievement, Weighted Average Grant Date Fair Value per Unit (in usd per share) | $ / shares | 0
Vested, Weighted Average Grant Date Fair Value per Unit (in usd per share) | $ / shares | 42.56
Forfeited, Weighted Average Grant Date Fair Value per Unit (in usd per share) | $ / shares | 0
Distributed, Vested, Weighted Average Grant Date Fair Value per Unit (in usd per share) | $ / shares | 34.51
Ending balance, Vested, Weighted Average Grant Date Fair Value per Unit (in usd per share) | $ / shares | $ 27.48

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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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 (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. + 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 (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + 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 (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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