CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 10,250us-gaap_NetIncomeLoss	$ 2,235us-gaap_NetIncomeLoss
Securities available for sale:
Unrealized holding gains on available for sale securities	4,322	3,311
Tax effect	(1,547)	(1,276)
Reclassification of gains on sales of securities recognized in earnings	(1)	0
Tax effect	0	0
Net of tax amount	2,774	2,035
Cash flow hedges:
Unrealized losses on cash flow hedges	(4,163)	(951)
Tax effect	1,605	367
Net of tax amount	(2,558)	(584)
Total other comprehensive income	216	1,451
Comprehensive income	$ 10,466us-gaap_ComprehensiveIncomeNetOfTax	$ 3,686us-gaap_ComprehensiveIncomeNetOfTax

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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Amount after tax and 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 before tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount before tax and reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities.

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