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Consolidated Statements of Stockholders' Equity (USD $) In Thousands, unless otherwise specified | Total | Series C Preferred Stock [Member] | Series D Preferred Stock [Member] | Parent [Member] | Parent [Member] Series C Preferred Stock [Member] | Parent [Member] Series D Preferred Stock [Member] | Preferred Stock [Member] Series C Preferred Stock [Member] | Preferred Stock [Member] Series D Preferred Stock [Member] | Common Stock [Member] | Capital in Excess of Par Value [Member] | Capital in Excess of Par Value [Member] Series C Preferred Stock [Member] | Capital in Excess of Par Value [Member] Series D Preferred Stock [Member] | Retained Earnings [Member] | Retained Earnings [Member] Series C Preferred Stock [Member] | Retained Earnings [Member] Series D Preferred Stock [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Noncontrolling Interest [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balances at Dec. 31, 2009 | $ 1,566,862 |  |  | $ 1,564,240 |  |  | $ 92,000 | $ 0 | $ 825 | $ 1,408,491 |  |  | $ 62,413 |  |  | $ 511 | $ 2,622
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings | 73,353 |  |  | 72,997 |  |  |  |  |  |  |  |  | 72,997 |  |  |  | 356
Dividends declared and paid: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock dividends declared and paid |  | (6,785) |  |  | (6,785) |  |  |  |  |  |  |  |  | (6,785) |  |  |
Common stock dividends declared and paid | (118,038) |  |  | (118,038) |  |  |  |  | 3 | 7,350 |  |  | (125,391) |  |  |  |
Redemption of 3,680,000 shares of Series C Preferred Stock | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock | 698 |  |  | 698 |  |  |  |  | 1 | 697 |  |  |  |  |  |  |
Issuance of common stock - stock purchase program | 10,277 |  |  | 10,277 |  |  |  |  | 5 | 10,272 |  |  |  |  |  |  |
Issuance of shares of restricted common stock |  |  |  |  |  |  |  |  | 4 | (4) |  |  |  |  |  |  |
Stock issuance costs | (1) |  |  | (1) |  |  |  |  |  | (1) |  |  |  |  |  |  |
Performance incentive plan | (1,634) |  |  | (1,634) |  |  |  |  |  | (1,634) |  |  |  |  |  |  |
Amortization of deferred compensation | 5,119 |  |  | 5,119 |  |  |  |  |  | 5,119 |  |  |  |  |  |  |
Amortization of interest rate hedges | (165) |  |  | (165) |  |  |  |  |  |  |  |  |  |  |  | (165) |
Unrealized gain/loss – commercial mortgage residual interests | 1,246 |  |  | 1,272 |  |  |  |  |  |  |  |  |  |  |  | 1,272 | (26)
Fair value treasury locks | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock value adjustments | 17 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contributions from noncontrolling interests | 43 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 43
Distributions to noncontrolling interests | (861) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (861)
Purchase of noncontrolling interest | (1,603) |  |  | (404) |  |  |  |  |  | (404) |  |  |  |  |  |  | (1,199)
Other | 263 |  |  | (93) |  |  |  |  |  | (136) |  |  |  |  |  | 43 | 356
Balances at Dec. 31, 2010 | 1,528,774 |  |  | 1,527,483 |  |  | 92,000 | 0 | 838 | 1,429,750 |  |  | 3,234 |  |  | 1,661 | 1,291
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings | 92,416 |  |  | 92,325 |  |  |  |  |  |  |  |  | 92,325 |  |  |  | 91
Dividends declared and paid: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock dividends declared and paid |  | (6,785) |  |  | (6,785) |  |  |  |  |  |  |  |  | (6,785) |  |  |
Common stock dividends declared and paid | (120,063) |  |  | (120,063) |  |  |  |  | 5 | 13,652 |  |  | (133,720) |  |  |  |
Redemption of 3,680,000 shares of Series C Preferred Stock | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock | 447,863 |  |  | 447,863 |  |  |  |  | 173 | 447,690 |  |  |  |  |  |  |
Issuance of common stock - stock purchase program | 79,794 |  |  | 79,794 |  |  |  |  | 32 | 79,762 |  |  |  |  |  |  |
Issuance of shares of restricted common stock | (56) |  |  | (56) |  |  |  |  | 1 | (57) |  |  |  |  |  |  |
Stock issuance costs | (19,453) |  |  | (19,453) |  |  |  |  |  | (19,453) |  |  |  |  |  |  |
Performance incentive plan | (513) |  |  | (513) |  |  |  |  |  | (513) |  |  |  |  |  |  |
Amortization of deferred compensation | 7,394 |  |  | 7,394 |  |  |  |  |  | 7,394 |  |  |  |  |  |  |
Amortization of interest rate hedges | 9 |  |  | 9 |  |  |  |  |  |  |  |  |  |  |  | 9 |
Unrealized gain/loss – commercial mortgage residual interests | (246) |  |  | (246) |  |  |  |  |  |  |  |  |  |  |  | (246) |
Fair value treasury locks | (5,218) |  |  | (5,218) |  |  |  |  |  |  |  |  |  |  |  | (5,218) |
Stock value adjustments | (36) |  |  | (36) |  |  |  |  |  |  |  |  |  |  |  | (36) |
Contributions from noncontrolling interests | 41 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 41
Distributions to noncontrolling interests | (45) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (45)
Balances at Dec. 31, 2011 | 2,003,876 |  |  | 2,002,498 |  |  | 92,000 | 0 | 1,049 | 1,958,225 |  |  | (44,946) |  |  | (3,830) | 1,378
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings | 141,937 |  |  | 142,015 |  |  |  |  |  |  |  |  | 142,015 |  |  |  | (78)
Dividends declared and paid: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock dividends declared and paid |  | (1,979) | (15,449) |  | (1,979) | (15,449) |  |  |  |  |  |  |  | (1,979) | (15,449) |  |
Common stock dividends declared and paid | (155,733) |  |  | (155,733) |  |  |  |  | 4 | 11,758 |  |  | (167,495) |  |  |  |
Redemption of 3,680,000 shares of Series C Preferred Stock | (3,098) | (92,000) |  |  | (92,000) |  | (92,000) |  |  |  | 3,098 |  |  | (3,098) |  |  |
Issuance of common stock: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock | 833 |  | 277,645 | 833 |  | 277,645 |  | 287,500 |  | 833 |  | (9,855) |  |  |  |  |
Issuance of common stock - stock purchase program | 44,412 |  |  | 44,412 |  |  |  |  | 17 | 44,395 |  |  |  |  |  |  |
Issuance of common stock - ATM equity program | 129,092 |  |  | 129,092 |  |  |  |  | 43 | 129,049 |  |  |  |  |  |  |
Issuance of shares of restricted common stock | 335 |  |  | 335 |  |  |  |  | 4 | 331 |  |  |  |  |  |  |
Equity component of convertible debt | (41,486) |  |  | (41,486) |  |  |  |  |  | (41,486) |  |  |  |  |  |  |
Stock issuance costs | (2,265) |  |  | (2,265) |  |  |  |  |  | (2,265) |  |  |  |  |  |  |
Performance incentive plan | (451) |  |  | (451) |  |  |  |  |  | (451) |  |  |  |  |  |  |
Amortization of deferred compensation | 7,370 |  |  | 7,370 |  |  |  |  |  | 7,370 |  |  |  |  |  |  |
Amortization of interest rate hedges | 231 |  |  | 231 |  |  |  |  |  |  |  |  |  |  |  | 231 |
Unrealized gain/loss – commercial mortgage residual interests | 1,132 |  |  | 1,132 |  |  |  |  |  |  |  |  |  |  |  | 1,132 |
Fair value treasury locks | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock value adjustments | 85 |  |  | 85 |  |  |  |  |  |  |  |  |  |  |  | 85 |
Balances at Dec. 31, 2012 | $ 2,297,585 |  |  | $ 2,296,285 |  |  | $ 0 | $ 287,500 | $ 1,117 | $ 2,101,002 |  |  | $ (90,952) |  |  | $ (2,382) | $ 1,300

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