Annual report pursuant to section 13 and 15(d)

Investments and Fair Value Measurements - Category of Financial Instruments Not Held at Fair Value (Detail)

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Investments and Fair Value Measurements - Category of Financial Instruments Not Held at Fair Value (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Carrying Amount | Cash
    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Financial Assets $ 27,122 $ 12,392
Fair Value | Cash
    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Financial Assets 27,122 12,392
Level I | Carrying Amount | Restricted Certificates of Deposit and Escrow
    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Financial Assets 1,021 1,020
Level I | Fair Value | Restricted Certificates of Deposit and Escrow
    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Financial Assets 1,021 1,020
Level II | Carrying Amount | Notes Payable
    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Financial liabilities 8,303 3,315
Level II | Carrying Amount | Borrowings Under Revolving Credit Agreement
    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Financial liabilities 3,000  
Level II | Fair Value | Notes Payable
    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Financial liabilities 8,303 3,315
Level II | Fair Value | Borrowings Under Revolving Credit Agreement
    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Financial liabilities $ 3,000