XML 20 R42.htm IDEA: XBRL DOCUMENT v2.4.0.6
Accrued Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Schedule of Accrued Liabilities [Line Items]    
Accrued compensation and related costs $ 1,450 $ 2,692
Accrued inventory costs 3,965 2,352
Accrued contract and other accrued expenses 2,734 2,575
Total accrued liabilities $ 8,149 $ 7,619