v3.5.0.2
Capital Stock and Stock-Based Compensation - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Mar. 31, 2016
Apr. 30, 2015
Mar. 31, 2015
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Class of Stock [Line Items]                
Preferred stock, shares authorized (shares)       100,000,000   100,000,000   100,000,000
Preferred stock, par value (usd per share)       $ 0.01   $ 0.01   $ 0.01
Common stock, shares authorized (shares)       300,000,000   300,000,000   300,000,000
Preferred stock, shares issued (shares)       0   0   0
Preferred Stock, shares outstanding (shares)       0   0   0
Stock based compensation expense       $ 200,000 $ 300,000 $ 1,300,000 $ 1,300,000  
Restricted Stock Units (RSUs) [Member]                
Class of Stock [Line Items]                
Restricted stock units vested (shares)           400,000 400,000  
Market value of restricted stock units           $ 1,500,000 $ 2,300,000  
2007 Long-Term Incentive Plan [Member] | Equity Option [Member]                
Class of Stock [Line Items]                
Weighted-average grant date fair value of stock options granted (usd per share)           $ 0.87    
Expected volatility rate           51.30%    
Expected life (in years)           5 years    
Dividend yield           7.80%    
Risk-free interest rate           1.21%    
2007 Long-Term Incentive Plan [Member] | Non Management Directors [Member]                
Class of Stock [Line Items]                
Stock issued during period for share based compensation, shares, new issues (shares) 9,358 12,987 38,961          
Stock issued during period for share based compensation, value, new issues $ 35,000 $ 100,000 $ 200,000          
Stock options granted during period (shares) 300,000              
Exercise price of stock options granted (usd per share) $ 3.74              
2007 Long-Term Incentive Plan [Member] | Non Management Directors [Member] | Equity Option [Member]                
Class of Stock [Line Items]                
Term of stock options (in years) 10 years              
2007 Long-Term Incentive Plan [Member] | Officer [Member]                
Class of Stock [Line Items]                
Stock options granted during period (shares) 200,000              
Exercise price of stock options granted (usd per share) $ 3.74              
2007 Long-Term Incentive Plan [Member] | Officer [Member] | Equity Option [Member]                
Class of Stock [Line Items]                
Term of stock options (in years) 10 years              
Vesting period (in years) 3 years              
2007 Long-Term Incentive Plan [Member] | Officers and Certain Subsidiaries Employees [Member] | Restricted Stock Units (RSUs) [Member]                
Class of Stock [Line Items]                
Vesting period (in years) 3 years              
Common stock, granted (shares) 300,000              
Common stock aggregate values, granted $ 1,000,000              
Class A [Member]                
Class of Stock [Line Items]                
Common stock, shares authorized (shares)       200,000,000   200,000,000   200,000,000
Common stock, par value (usd per share)       $ 0.01   $ 0.01   $ 0.01
Voting rights per share (vote per share)           one vote per share    
Common stock, votes per share owned (vote per share)           $ 1    
Common stock, shares issued (shares)       133,100,000   133,100,000   132,800,000
Common stock, shares outstanding (shares)       133,100,000   133,100,000   132,800,000
Class A [Member] | Restricted Stock Units (RSUs) [Member]                
Class of Stock [Line Items]                
Stock issued during period, shares, new issues (shares)           200,000 200,000  
Class B [Member]                
Class of Stock [Line Items]                
Common stock, shares authorized (shares)       100,000,000   100,000,000   100,000,000
Common stock, par value (usd per share)       $ 0.01   $ 0.01   $ 0.01
Voting rights per share (vote per share)           five votes per share    
Common stock, votes per share owned (vote per share)           $ 5    
Maximum percentage of voting power           49.00%    
Common stock, shares issued (shares)       23,200,000   23,200,000   23,200,000
Common stock, shares outstanding (shares)       23,200,000   23,200,000   23,200,000