Inventories (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Components of inventories
Finished goods	$ 58,248	$ 56,108
Work in progress	2,105	2,292
Raw materials	1,611	1,630
Total	61,964	60,030
Reserve for obsolete and excess inventory	(7,438)	(8,546)
Inventories, net	$ 54,526	$ 51,484

The amount of the valuation account as of the balance sheet date which reduces the carrying amount of inventory to net realizable value; takes into consideration such factors as market value, excessive quantities based on expected sales, technological obsolescence, and shrinkage. May also provide for estimated product returns or price concessions pertaining to product cost.

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

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+ Details