Annual report pursuant to Section 13 and 15(d)

INCOME TAXES (Provision for Income Taxes Charged to Operations) (Details)

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INCOME TAXES (Provision for Income Taxes Charged to Operations) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Disclosure [Abstract]      
Current tax expense $ 26,535 $ 24,521 $ 15,481
Deferred tax expense (benefit) 243 (1,212) 2,644
Income tax expense $ 26,778 $ 23,309 $ 18,125