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Leasing arrangements - leasee (Tables)

12 Months Ended

Dec. 31, 2020

Presentation of leases for lessee [abstract]

Summary of carrying amount of right-of-use assets and the depreciation expenses


		December 31, 2019				December 31, 2020
		Carrying amount				Carrying amount
		NT$000				NT$000
Land			669,967				636,261
Buildings			15,043				19,044
Machinery and equipment			—				203,249
Others			2,058				515

			687,068				859,069


		Year ended December 31,
		2019				2020
		Depreciation expenses				Depreciation expenses
		NT$000				NT$000
Land			22,657				20,938
Buildings			7,113				7,819
Machinery and equipment			4,520				46,225
Others			1,809				1,544

			36,099				76,526

Summary of profit and loss accounts relating to lease contracts


		Year ended December 31,
		2019				2020
		NT$000				NT$000
Items affecting profit or loss
Interest expense on lease liabilities			14,349				13,442
Expense on short-term lease contracts			230,589				202,782