Property and equipment (Tables)

3 Months Ended

Mar. 31, 2013

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


	Estimated Useful Life (Years)		March 31, 2013			December 31, 2012
Land		—	$	5,273		$	5,273
Buildings		39-40		54,948			54,948
Building improvements		5-40		114,245			114,245
Machinery and equipment		3-15		81,396			81,382
Furniture, fixtures and office equipment		5-10		5,239			5,239
Computer equipment and software		3		11,876			11,840
Leasehold improvements				17			17
Construction in progress				13,535			12,266

				286,529			285,210
Less accumulated depreciation and amortization				(104,239	)		(101,249	)

Property and equipment — net			$	182,290		$	183,961

Depreciation and Amortization Expense

Depreciation and amortization expense related to property and equipment for the three months ended March 31, 2013 and 2012 was as follows (in thousands):


	Three months ended March 31,
	2013		2012
Depreciation and amortization expense	$	2,990	$	3,357

- Definition

Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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