Annual report pursuant to Section 13 and 15(d)

Accounts Receivable - Summary of Accounts Receivable (Detail)

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Accounts Receivable - Summary of Accounts Receivable (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Receivables [Abstract]    
Trade Accounts Receivable $ 58,224 $ 44,196
Long-term Contract Receivables:    
Amounts Billed   907
Unbilled Recoverable Costs and Accrued Profits 2,858 1,020
Total Long-term Contract Receivables 2,858 1,927
Total Receivables 61,082 46,123
Less Allowance for Doubtful Accounts (140) (650)
Accounts Receivable $ 60,942 $ 45,473