Quarterly report pursuant to Section 13 or 15(d)

Equity and Mezzanine Equity - Additional Information (Detail)

v3.19.3
Equity and Mezzanine Equity - Additional Information (Detail) - USD ($)
 9 Months Ended
Sep. 27, 2019
Apr. 11, 2018
Sep. 30, 2019
Sep. 26, 2019
Jan. 11, 2019
Dec. 31, 2018
Class of Stock [Line Items]            
Shares reclassified to common stock   3,500,000        
Senior common stock, authorized but unissued   57,969        
Capital stock, shares authorized   100,000,000        
Common stock, shares authorized 83,700,000 87,700,000 83,700,000 87,700,000   87,700,000
Series A and B Preferred Stock ATM Programs            
Class of Stock [Line Items]            
Redeemable preferred stock, shares issued (in shares)     2,264,000     2,264,000
Redeemable preferred stock, par value (in dollars per share)     $ 0.001     $ 0.001
Redeemable preferred stock, liquidation preference (in dollars per share)     $ 25     $ 25
Redeemable preferred stock, shares authorized     5,350,000     5,350,000
Series D Cumulative Redeemable Preferred Stock            
Class of Stock [Line Items]            
Redeemable preferred stock, dividend rate percentage (as percent)     7.00%      
Temporary equity, contract terms, minimum vote needed to trigger change in control from tender offer (as percent)     90.00%      
Series E Cumulative Redeemable Preferred Stock            
Class of Stock [Line Items]            
Redeemable preferred stock, dividend rate percentage (as percent) 6.625%          
Redeemable preferred stock, par value (in dollars per share) $ 0.001          
Redeemable preferred stock, liquidation preference (in dollars per share) $ 25.00          
Redeemable preferred stock, shares authorized 4,000,000          
Cantor Fitzgerald & Co | Preferred Stock | Series A and B Preferred Stock ATM Programs            
Class of Stock [Line Items]            
Redeemable preferred stock, shares issued (in shares)     0      
Maximum remaining capacity to sell preferred stock under open market sale agreement     $ 37,200,000      
Cantor Fitzgerald & Co | Preferred Stock | Series A Cumulative Redeemable Preferred Stock            
Class of Stock [Line Items]            
Redeemable preferred stock, dividend rate percentage (as percent)     7.75%      
Cantor Fitzgerald & Co | Preferred Stock | Series B Cumulative Redeemable Preferred Stock            
Class of Stock [Line Items]            
Redeemable preferred stock, dividend rate percentage (as percent)     7.50%      
Maximum aggregate sales price of shares to be issued under open market sale agreement     $ 40,000,000.0      
Cantor Fitzgerald & Co | Preferred Stock | Series D Cumulative Redeemable Preferred Stock            
Class of Stock [Line Items]            
Maximum aggregate sales price of shares to be issued under open market sale agreement     50,000,000.0      
Maximum remaining capacity to sell preferred stock under open market sale agreement     $ 18,600,000      
Common Stock ATM Program | Cantor Fitzgerald & Co | Common Stock            
Class of Stock [Line Items]            
Redeemable preferred stock, shares issued (in shares)     2,000,000      
Consideration received     $ 40,700,000      
Maximum remaining capacity to sell common stock under open market sale agreement     28,700,000      
2019 Universal Shelf            
Class of Stock [Line Items]            
Universal registration statement, amount authorized     $ 462,300,000   $ 500,000,000