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BUSINESS COMBINATIONS - Schedule of Unaudited Pro forma Combined Information (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Business Combinations [Abstract] |  |
Revenues | $ 189,851 | $ 187,872
Operating income | 12,050 | 7,237
Net income | $ 4,335 | $ 1,032
Weighted average common shares outstanding, basic | 51,179 | 48,005
Basic earnings per common share (in dollars per share) | $ 0.08 | $ 0.02
Weighted average common shares outstanding, diluted | 51,387 | 48,262
Diluted earnings per common share (in dollars per share) | $ 0.08 | $ 0.02

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