Property and equipment

3 Months Ended

Mar. 31, 2015

3. Property and equipment

Property and equipment — net consist of the following (dollar amounts in thousands):


	Estimated Useful Life (Years)		March 31, 2015			December 31, 2014
Land		—	$	5,273		$	5,273
Buildings		39-40		54,948			54,948
Building improvements		5-40		114,131			114,131
Machinery and equipment		3-15		82,120			80,919
Furniture, fixtures and office equipment		5-10		5,015			5,015
Computer equipment and software		3		10,499			10,465
Leasehold improvements		4		17			17
Construction in progress				41,997			39,580

				314,000			310,348
Less accumulated depreciation and amortization				(120,546	)		(118,221	)

Property and equipment — net			$	193,454		$	192,127

Leasehold improvements are amortized over four years which is the shorter of the term of the lease or the service lives of the improvements.

Depreciation and amortization expense related to property and equipment for the three months ended March 31, 2015 and 2014 was $2.3 million and $2.5 million, respectively.

- Definition

The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.

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