Property, Plant, and Equipment

12 Months Ended

Dec. 31, 2015

11. Property, Plant, and Equipment

Property, plant, and equipment consist of the following:


	December 31,
	2015		2014
	(in thousands)
Building	$	82,309	$	67,760
Leasehold improvements		23,392		23,960
Land		6,895		7,020
Machinery and equipment		108,442		104,819
Furniture, fixtures, and automobiles		13,439		12,213
Construction in progress		19,942		25,068
Total property, plant, and equipment		254,419		240,840
Less accumulated depreciation		(112,258)		(102,551)
Total property, plant, and equipment, net	$	142,161	$	138,289

The Company incurred depreciation expense of $11.3 million, $12.5 million, and $11.2 million for the years ended December 31, 2015, 2014, and 2013, respectively.

Interest expense capitalized was approximately $1.1 million, $1.2 million, and $0.1 million, for the years ended December 31, 2015, 2014, and 2013, respectively. The interest expense capitalized is primarily related to certain foreign construction projects during the year.

As of December 31, 2015 and 2014, the Company had $2.9 million and $3.4 million, respectively, in capitalized manufacturing equipment that is intended to be used specifically for the manufacture of Primatene® HFA. The Company will continue to monitor developments with the FDA as it relates to its Primatene® HFA indefinite lived intangible assets in determining if there is an impairment of these related fixed assets (see Note 9).