| 
 | Innovation | Innovation | Innovation | Innovation | 
| DIF | 0.013*** | 
 | 
 | 
 | 
| 
 | (4.98) | 
 | 
 | 
 | 
| DIF_B | 
 | 0.012*** | 
 | 
 | 
| 
 | 
 | (5.14) | 
 | 
 | 
| DIF_C | 
 | 
 | 0.008*** | 
 | 
| 
 | 
 | 
 | (4.35) | 
 | 
| DIF_D | 
 | 
 | 
 | 0.009** | 
| 
 | 
 | 
 | 
 | (1.97) | 
| SIZE | 1.494*** | 1.489*** | 1.514*** | 1.481*** | 
| 
 | (3.62) | (3.61) | (3.67) | (3.58) | 
| PPE | 13.938*** | 13.942*** | 13.997*** | 13.651*** | 
| 
 | (6.64) | (6.64) | (6.66) | (6.49) | 
| LEV | −5.791*** | −5.774*** | −5.835*** | −5.909*** | 
| 
 | (−11.81) | (−11.78) | (−11.90) | (−12.04) | 
| Capital | 0.948*** | 0.946*** | 0.946*** | 0.950*** | 
| 
 | (6.56) | (6.55) | (6.54) | (6.56) | 
| Mbr | −7.928*** | −7.916*** | −7.954*** | −8.051*** | 
| 
 | (−18.06) | (−18.03) | (−18.11) | (−18.33) | 
| Growth | 0.397*** | 0.391*** | 0.404*** | 0.392*** | 
| 
 | (3.66) | (3.60) | (3.71) | (3.60) | 
| Equity | −2.497*** | −2.476*** | −2.539*** | −2.536*** | 
| 
 | (−4.38) | (−4.34) | (−4.45) | (−4.44) | 
| ROA | −8.383*** | −8.384*** | −8.429*** | −8.518*** | 
| 
 | (−7.74) | (−7.74) | (−7.77) | (−7.84) | 
| AGE | −0.060*** | −0.061*** | −0.060*** | −0.059*** | 
| 
 | (−4.51) | (−4.55) | (−4.47) | (−4.39) | 
| LnTI | −1.339*** | −1.344*** | −1.344*** | −1.282*** | 
| 
 | (−3.33) | (−3.34) | (−3.34) | (−3.18) | 
| Merge | 0.864*** | 0.869*** | 0.866*** | 0.916*** | 
| 
 | (6.39) | (6.44) | (6.40) | (6.79) | 
| Ind | 0.034** | 0.034** | 0.034*** | 0.036*** | 
| 
 | (2.56) | (2.57) | (2.62) | (2.76) | 
| FB | 0.142 | 0.138 | 0.144 | 0.135 | 
| 
 | (1.01) | (0.98) | (1.02) | (0.96) | 
| Constant | 1.885 | 2.204 | 1.857 | 1.351 | 
| 
 | (0.81) | (0.95) | (0.80) | (0.58) | 
| Observations | 4,472 | 4,472 | 4,472 | 4,472 | 
| R-squared | 0.417 | 0.417 | 0.416 | 0.414 | 
| F test | 0 | 0 | 0 | 0 | 
| r2_a | 0.412 | 0.413 | 0.412 | 0.410 | 
| F | 85.77 | 85.85 | 85.50 | 84.81 |