| Schedule of Earnings Per Share Reconciliation [Table Text Block] |
| | | Year Ended December 31, | | | | 2015 | | 2014 | | 2013 | | | | (amounts in thousands, except share and per share data) | | | | | | | | | | | | | | | Basic Income (Loss) Per Share | | | | | | | | | | Numerator | | | | | | | | | | | Net income (loss) available to the Company | $ | 29,184 | | $ | 26,823 | | $ | 26,024 | | | Preferred stock dividends | | 752 | | | - | | | - | | | Net income (loss) available to common shareholders | $ | 28,432 | | $ | 26,823 | | $ | 26,024 | | Denominator | | | | | | | | | | | Basic weighted average shares outstanding | | 38,083,647 | | | 37,763,353 | | | 37,417,807 | | | Basic net income (loss) per share available | | | | | | | | | | | to common shareholders | $ | 0.75 | | $ | 0.71 | | $ | 0.70 | | | | | | | | | | | | | Diluted Income (Loss) Per Share | | | | | | | | | | Numerator | | | | | | | | | | | Net income (loss) available to the Company | $ | 29,184 | | $ | 26,823 | | $ | 26,024 | | | Preferred stock dividends | | 752 | | | - | | | - | | | Net income (loss) available to common shareholders | $ | 28,432 | | $ | 26,823 | | $ | 26,024 | | Denominator | | | | | | | | | | | Basic weighted average shares outstanding | | 38,083,647 | | | 37,763,353 | | | 37,417,807 | | | Effect of RSUs and options under the treasury stock method | | 953,976 | | | 900,713 | | | 883,688 | | | Diluted weighted average shares outstanding | | 39,037,623 | | | 38,664,066 | | | 38,301,495 | | | Diluted net income (loss) per share available | | | | | | | | | | | to common shareholders | $ | 0.73 | | $ | 0.69 | | $ | 0.68 |
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