| Schedule of Quarterly Financial Information [Table Text Block] |
| Quarters Ended | | December 31 | | September 30 | | June 30 | | March 31 | | (amounts in thousands, except per share data) | | 2018 | | | | | | | | | | | | | Net revenues | $ | 411,375 | | $ | 378,508 | | | 372,124 | | $ | 300,560 | | Operating income | $ | (377,593) | | $ | 78,733 | | | 27,552 | | $ | 5,689 | | Net income (loss) available to the Company from | | | | | | | | | | | | | continuing operations | $ | (386,568) | | $ | 36,590 | | $ | 1,597 | | $ | (14,206) | | Preferred stock dividend | $ | - | | $ | - | | $ | - | | $ | - | | Net income available to common shareholders from | | | | | | | | | | | | | continuing operations | $ | (386,568) | | $ | 36,590 | | | 1,597 | | $ | (14,206) | | Income (loss) from discontinued operations, | | | | | | | | | | | | | net of income taxes | $ | (378) | | $ | 358 | | $ | 844 | | $ | 328 | | Net income (loss) available to common shareholders | $ | (386,946) | | $ | 36,948 | | | 2,441 | | $ | (13,878) | | Net income (loss) from continuing operations | | | | | | | | | | | | | per share - basic (1) | $ | (2.80) | | $ | 0.26 | | $ | 0.01 | | $ | (0.10) | | Net income (loss) from discontinued operations, | | | | | | | | | | | | | net of tax, per share - basic (1) | $ | - | | $ | - | | $ | 0.01 | | $ | - | | Net income (loss) available to common shareholders | | | | | | | | | | | | | per share - basic (1) | $ | (2.80) | | $ | 0.27 | | | 0.02 | | $ | (0.10) | | Weighted average common shares outstanding - basic | | 138,033 | | | 138,740 | | | 138,639 | | | 138,939 | | Net income (loss) from continuing operations | | | | | | | | | | | | | per share - diluted (1) | $ | (2.80) | | $ | 0.26 | | $ | 0.01 | | $ | (0.10) | | Net income (loss) from discontinued operations, | | | | | | | | | | | | | net of tax, per share - diluted (1) | $ | - | | $ | - | | $ | 0.01 | | $ | - | | Net income (loss) available to common shareholders | | | | | | | | | | | | | per share - diluted (1) | $ | (2.80) | | $ | 0.27 | | $ | 0.02 | | $ | (0.10) | | Weighted average common shares outstanding - diluted | | 138,033 | | | 139,103 | | | 139,263 | | | 138,939 | | Preferred stock dividends declared and paid | $ | - | | $ | - | | $ | - | | $ | - | | Common stock dividends declared and paid | $ | 12,367 | | $ | 12,486 | | $ | 12,475 | | $ | 12,441 | | | | | | | | | | | | | | Quarters Ended | | December 31 | | September 30 | | June 30 | | March 31 | | (amounts in thousands, except per share data) | | 2017 | | | | | | | | | | | | | Net revenues | $ | 246,614 | | $ | 122,299 | | $ | 124,970 | | $ | 99,001 | | Operating income | $ | (2,265) | | $ | 13,485 | | $ | 16,379 | | $ | (15,016) | | Income (loss) available to the Company from | | | | | | | | | | | | | continuing operations | $ | 231,829 | | $ | 4,100 | | $ | 6,414 | | $ | (9,331) | | Preferred stock dividend | $ | 252 | | $ | 663 | | $ | 550 | | $ | 550 | | Net income available to common shareholders from | | | | | | | | | | | | | continuing operations | $ | 231,577 | | $ | 3,437 | | $ | 5,864 | | $ | (9,881) | | Income (loss) from discontinued operations, | | | | | | | | | | | | | net of income taxes | $ | 836 | | $ | - | | $ | - | | $ | - | | Net income (loss) available to common shareholders | $ | 232,413 | | $ | 3,437 | | $ | 5,864 | | $ | (9,881) | | Net income (loss) from continuing operations | | | | | | | | | | | | | per share - basic (1) | $ | 2.63 | | $ | 0.11 | | $ | 0.16 | | $ | (0.24) | | Net income (loss) from discontinued operations, | | | | | | | | | | | | | net of tax, per share - basic (1) | $ | 0.01 | | $ | - | | $ | - | | $ | - | | Net income (loss) available to common shareholders | | | | | | | | | | | | | per share - basic (1) | $ | 2.63 | | $ | 0.09 | | $ | 0.15 | | $ | (0.25) | | Weighted average common shares outstanding - basic | | 88,309 | | | 38,955 | | | 38,945 | | | 38,910 | | Net income (loss) from continuing operations | | | | | | | | | | | | | per share - diluted (1) | $ | 2.58 | | $ | 0.28 | | $ | 0.26 | | $ | 0.11 | | Net income (loss) from discontinued operations, | | | | | | | | | | | | | net of tax, per share - diluted (1) | $ | 0.01 | | $ | - | | $ | - | | $ | - | | Net income (loss) available to common shareholders | | | | | | | | | | | | | per share - diluted (1) | $ | 2.59 | | $ | 0.09 | | $ | 0.15 | | $ | (0.25) | | Weighted average common shares outstanding - diluted | | 89,887 | | | 39,728 | | | 39,656 | | | 38,910 | | Preferred stock dividends declared and paid | $ | 924 | | $ | 550 | | $ | 550 | | $ | 550 | | Common stock dividends declared and paid | $ | 12,746 | | $ | 10,713 | | $ | 2,921 | | $ | 2,916 |
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