INCOME TAXES (Computation of Differences Between Financial Statement Tax Expense And Amounts) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income taxes at statutory federal rate of 35%									$ 20,439	$ 18,402	$ 15,883
Tax exempt income									(1,222)	(1,122)	(1,376)
Nondeductible expense									180	182	213
State income tax, net of federal tax effect									1,396	554	490
Captive insurance premium income									(391)	0	0
Tax credits									(243)	(253)	(153)
Bank owned life insurance									(578)	(340)	(348)
Reserve for unrecognized tax benefits									(25)	(45)	22
Other									3	(196)	(13)
Total income tax expense	$ 5,060	$ 4,746	$ 5,154	$ 4,599	$ 3,808	$ 4,740	$ 4,392	$ 4,242	$ 19,559	$ 17,182	$ 14,718