Annual report pursuant to Section 13 and 15(d)

Consolidated Valuation and Qualifying Accounts (Detail)

v2.4.0.8
Consolidated Valuation and Qualifying Accounts (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Allowance for Doubtful Accounts
      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance Beginning of Year $ 611 $ 678 $ 888
Additions Charged to costs and Expenses 564 622 545
Deductions 619 [1] 689 [1] 755 [1]
Balance at End of Year 556 611 678
Allowance for Product Returns
      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance Beginning of Year 2,579 1,823 861
Additions Charged to costs and Expenses 27,707 16,119 22,704
Deductions 28,710 [1] 15,363 [1] 21,742 [1]
Balance at End of Year $ 1,576 $ 2,579 $ 1,823
[1] The 2011 deduction amount for the allowance for doubtful accounts includes $0.5 million related to the deconsolidation of Real Goods Solar. See Note 3. Related Party Transactions.