Annual report pursuant to Section 13 and 15(d)

Schedule II - Valuation Accounts (Detail)

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Schedule II - Valuation Accounts (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Allowance for Doubtful Accounts [Member]
     
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance $ 1,105 $ 641 $ 520
Additions charged to cost and expense 29 643 81
Deductions from Merger Transaction       
Additions (Deductions) from acquired company 115   98
Others (546) (179) (58)
Balance 703 1,105 641
Allowance for Obsolete/Excess Inventory [Member]
     
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance 6,944 7,406 11,010
Additions charged to cost and expense 2,246 1,264 395
Deductions from Merger Transaction     (2,279)
Additions (Deductions) from acquired company 3,483   (193)
Others (1,352) (1,726) (1,527)
Balance $ 11,321 $ 6,944 $ 7,406