Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity - Reconciliation of Changes in Parent Company's Total Shareholders' Equity (Detail)

v3.19.1
Shareholders' Equity - Reconciliation of Changes in Parent Company's Total Shareholders' Equity (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Beginning Balance $ 2,057,737 $ 2,028,323
Earned portion of non-vested stock 1,396 1,495
Stock option expense   4
Adjustment to redemption value on noncontrolling redeemable Operating Partnership units (294) 1,470
Net income attributable to common shareholders 34,454 33,889
Amortization of terminated hedge included in AOCL 229 229
Change in fair value of derivatives, net of reclassifications   48
Dividends (46,631) (46,121)
Ending Balance 2,046,891 2,019,337
Common Stock Shares [Member]    
Beginning Balance 466 466
Forfeiture of non-vested stock   (1)
Ending Balance 466 465
Additional Paid-in Capital [Member]    
Beginning Balance 2,372,157 2,363,171
Forfeiture of non-vested stock   1
Earned portion of non-vested stock 1,396 1,495
Stock option expense   4
Ending Balance 2,373,553 2,364,671
Dividends in Excess of Net Income [Member]    
Beginning Balance (308,011) (327,727)
Adjustment to redemption value on noncontrolling redeemable Operating Partnership units (294) 1,470
Net income attributable to common shareholders 34,454 33,889
Dividends (46,631) (46,121)
Ending Balance (320,482) (338,489)
Accumulated Other Comprehensive Income (Loss) [Member]    
Beginning Balance (6,875) (7,587)
Amortization of terminated hedge included in AOCL 229 229
Change in fair value of derivatives, net of reclassifications   48
Ending Balance $ (6,646) $ (7,310)