Quarterly report pursuant to Section 13 or 15(d)

Cash Proceeds Along with Fair Value Disclosures Related to Grants, Exercises, and Vested Options (Detail)

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Cash Proceeds Along with Fair Value Disclosures Related to Grants, Exercises, and Vested Options (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]        
Proceeds from stock options exercised   $ 8 $ 44 $ 255
Tax benefit related to stock options exercised [1]        
Intrinsic value of stock options exercised [2]   $ 12 $ 52 $ 95
Weighted-average fair value of options granted $ 1.42 $ 1.32 $ 1.70 $ 1.73
Total fair value of shares vested during the period $ 440 $ 302 $ 733 $ 648
[1] Excess tax benefits received related to stock option exercises are presented as financing cash inflows. The Company currently does not receive a tax benefit related to the exercise of stock options due to the Company’s net operating losses.
[2] The intrinsic value of stock options exercised is the amount by which the market price of the stock on the date of exercise exceeded the market price of the stock on the date of grant.