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v3.22.0.1

Supplemental Financial Information - Quarterly Results (Detail) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues | $ 79,175 | [1] | $ 78,112 | [1] | $ 75,775 | [1] | $ 71,256 | [1] | $ 65,651 | [1] | $ 63,749 | [1] | $ 57,312 | [1] | $ 63,200 | [1] | $ 304,318 | $ 249,912 | $ 266,528
Operating income | 22,563 |  | 24,203 |  | 23,685 |  | 18,607 |  | 12,907 |  | 14,744 |  | 11,797 |  | 15,634 |  | 89,058 | 55,082 | 53,534
Income/(loss) before income taxes | 15,271 |  | 6,333 |  | 21,889 |  | 13,178 |  | (11,297) |  | 1,138 |  | (14,054) |  | (11,009) |  | 56,671 | (35,222) | 121
Net income/(loss) | $ 11,187 |  | $ 5,833 |  | $ 17,630 |  | $ 15,147 |  | $ (13,497) |  | $ (270) |  | $ (13,250) |  | $ (8,638) |  | $ 49,797 | $ (35,655) | $ (10,425)
Earnings/(loss) per share – basic | $ 0.07 |  | $ 0.04 |  | $ 0.11 |  | $ 0.09 |  | $ (0.10) |  | $ (0.01) |  | $ (0.09) |  | $ (0.06) |  | $ 0.31 | $ (0.25) | $ (0.08)
Earnings/(loss) per share – diluted | 0.07 |  | 0.04 |  | 0.11 |  | 0.09 |  | (0.10) |  | (0.01) |  | (0.09) |  | (0.06) |  | 0.31 | (0.25) | (0.08)
Dividends per common share | $ 0.03 |  | $ 0.03 |  | $ 0.03 |  | $ 0.03 |  | $ 0.03 |  | $ 0.03 |  | $ 0.03 |  | $ 0.03 |  | $ 0.12 | $ 0.12 | $ 0.12
(Loss)/gain on revaluation of deferred consideration (Note 12) | $ (3,048) |  | $ 1,737 |  | $ 497 |  | $ 2,832 |  | $ (22,385) |  | $ (8,870) |  | $ (23,358) |  | $ (2,208) |  | $ 2,018 | $ (56,821) | $ (11,293)
Impairments (Note 25) |  |  | $ (15,853) |  |  |  | $ (303) |  |  |  | $ (3,080) |  |  |  | $ (19,672) |  | (16,156) | (22,752) | $ (30,710)
Loss on extinguishment of debt (Note 11) |  |  |  |  |  |  |  |  |  |  |  |  | $ (2,387) |  |  |  | $ 0 | $ (2,387) |
[1] | Advisory fees previously reported have been revised due to an immaterial error correction. These revisions had no effect on previously reported net income. See Note 2 for additional information.

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