Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED AWARDS AND PER SHARE INFORMATION - Cash Proceeds Along with Fair Value Disclosures Related to Grants, Exercises and Vesting Options (Detail)

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STOCK-BASED AWARDS AND PER SHARE INFORMATION - Cash Proceeds Along with Fair Value Disclosures Related to Grants, Exercises and Vesting Options (Detail) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Cash proceeds along with fair value disclosures related to grants, exercises and vesting options        
Proceeds from stock options exercised $ 33 $ 254 $ 455 $ 1,218
Tax benefit related to stock options exercised 0 0 0 0
Intrinsic value of stock options exercised 0 167 91 1,308
Weighted-average fair value of options granted during period $ 1.02 $ 2.84 $ 1.55 $ 3.25
Total fair value of shares vested during the period $ 398 $ 311 $ 1,410 $ 874