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LEASES - Additional Information (Detail) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Leases [Abstract]      
Operating lease expenses ¥ 35,738 ¥ 24,255 ¥ 22,886
Short-term leases expense ¥ 6,511