CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 17,774	$ 12,134
OTHER COMPREHENSIVE INCOME, NET OF INCOME TAXES:
Unrealized holding gain on available-for-sale securities arising during the period	13,473	2,283
Income tax expense related to available-for-sale securities unrealized holding gain	(4,854)	(822)
Reclassification for net gains on available-for-sale securities realized in earnings	(21)	(104)
Income tax benefit related to available-for-sale securities realized gains	7	38
Other comprehensive income	8,605	1,395
COMPREHENSIVE INCOME	$ 26,379	$ 13,529

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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