Property, Plant and Equipment, Net

12 Months Ended

Dec. 31, 2019

Note 5. Property, Plant and Equipment, Net

The components of our property, plant and equipment are summarized below (in thousands):


	December 31,		December 31,
	2019		2018
Property, plant and equipment:
Machinery and equipment, at cost	$	45,742	$	51,496
Less: accumulated depreciation and amortization		(37,115)		(41,431)
Building, at cost		38,837		39,775
Less: accumulated depreciation and amortization		(12,736)		(12,147)
Leasehold improvements, at cost		4,877		5,464
Less: accumulated depreciation and amortization		(4,035)		(4,497)
Construction in progress		61,833		43,620
	$	97,403	$	82,280

As of December 31, 2019, the balance of construction in progress was $61.8 million, of which $48.8 million was related to our buildings in our new Dingxing and Kazuo locations, $3.4 million was for manufacturing equipment purchases not yet placed in service and $9.6 million was from our construction in progress for our other consolidated subsidiaries. As of December 31, 2018, the balance of construction in progress was $43.6 million, of which $31.7 million was related to our buildings in our new Dingxing and Kazuo locations, $2.2 million was for manufacturing equipment purchases not yet placed in service and $9.7 million was from our construction in progress for our other consolidated subsidiaries.

Depreciation and amortization expense was $5.5 million, $4.9 million and $4.4 million for the years ended December 31, 2019, 2018 and 2017, respectively.