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Stockholders' Equity - Stock Option Activities of Long-Term Incentive and Option Plans (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Stockholders Equity [Line Items]      
Shares outstanding at beginning of year 842,780    
Exercised, Shares (45,215)    
Cancelled, forfeited or expired, Shares (578,335)    
Shares outstanding at end of year 219,230 842,780  
Shares exercisable at end of year 131,705    
Outstanding at beginning of year, Weighted-Average Exercise Price $ 31.93    
Exercised, Weighted-Average Exercise Price 8.20    
Forfeited or expired, Weighted-Average Exercise Price 34.38    
Outstanding at end of year, Weighted-Average Exercise Price 30.36 $ 31.93  
Exercisable at end of year, Weighted-Average Exercise Price $ 28.25    
Weighted-average fair value per option granted during year   $ 14.19 $ 14.85
Total intrinsic value of options exercised during the year $ 216,000 $ 4,292,000 $ 3,461,000
Total fair value of options vested during the year $ 469,000 $ 2,411,000 $ 1,502,000
2016 Plan [Member]      
Stockholders Equity [Line Items]      
Granted, Shares 0    
Maximum number of securities for issuance 2,750,000    
Number of awards available to be granted 2,632,332    
2016 Plan [Member] | Restricted Stock And Restricted Stock Units RSUs [Member]      
Stockholders Equity [Line Items]      
Number of unvested restricted stock/restricted stock units outstanding 398,349    
2008 Plan [Member]      
Stockholders Equity [Line Items]      
Shares outstanding at end of year 219,230    
Shares exercisable at end of year 131,705    
2008 Plan [Member] | Restricted Stock And Restricted Stock Units RSUs [Member]      
Stockholders Equity [Line Items]      
Number of unvested restricted stock/restricted stock units outstanding 639,941