Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
NET INCOME	$ 35,688us-gaap_NetIncomeLoss	$ 23,231us-gaap_NetIncomeLoss	$ 27,684us-gaap_NetIncomeLoss
OTHER COMPREHENSIVE INCOME
Unrealized holding gains (losses) arising during the period on available-for-sale securities	2,749	(5,513)	(297)
Less: Reclassification adjustment for realized gains (losses) included in net income	8	(151)	2
Other comprehensive income (loss), before tax effect	2,741	(5,362)	(299)
Less: Tax effect of other comprehensive income (loss)	1,075us-gaap_OtherComprehensiveIncomeLossTax	(2,103)us-gaap_OtherComprehensiveIncomeLossTax	(117)us-gaap_OtherComprehensiveIncomeLossTax
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	1,666	(3,259)	(182)
COMPREHENSIVE INCOME	$ 37,354us-gaap_ComprehensiveIncomeNetOfTax	$ 19,972us-gaap_ComprehensiveIncomeNetOfTax	$ 27,502us-gaap_ComprehensiveIncomeNetOfTax

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Amount before tax, after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount of tax expense (benefit) allocated to other comprehensive income (loss).

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