Inventories (Tables)

12 Months Ended

Dec. 31, 2013

Inventories [Abstract]

Inventory

The components of inventories, net of allowances, are as follows (in thousands):

	December 31,
	2013		2012
Finished goods	$	22,886	$	24,657
Work in process		3,883		3,743
Raw materials and supplies		29,213		24,095
	$	55,982	$	52,495

Summary of allowance for excess and obsolete inventory account

The activity in the allowance for excess and obsolete inventory account for the three years ended December 31, 2013 was as follows (in thousands):

	Years Ended December 31,
	2013			2012			2011
Balance at beginning of year	$	2,244		$	1,239		$	1,612
Provision		2,089			2,385			598
Charges		(1,383	)		(1,380	)		(971	)
Balance at end of year	$	2,950		$	2,244		$	1,239