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STOCK-BASED COMPENSATION (Detail Textuals 1) - Restricted Stock - USD ($)
6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total fair value of shares vested $ 19,271,000 $ 9,534,000
Tax benefits for compensation expense for restricted stock 2,562,000 $ 285,000
Unrecognized compensation cost related to non-vested restricted shares $ 44,857,000  
Unrecognized compensation cost related to non-vested restricted shares recognized period 3.8 years