Parent Company Only Financial Statements - Condensed Statements of Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Condensed Statements of Comprehensive Income
NET INCOME	$ 14,742us-gaap_NetIncomeLoss	$ 12,610us-gaap_NetIncomeLoss	$ 8,535us-gaap_NetIncomeLoss
OTHER COMPREHENSIVE INCOME BEFORE TAX:
Change in unrealized gain (loss) on securities availableforsale	1,830	(3,220)	860
Total other comprehensive income (loss)	1,830	(3,227)	1,810
DEFERRED TAX EXPENSE (BENEFIT) RELATED TO OTHER COMPREHENSIVE INCOME	641	(1,099)	615
OTHER COMPREHENSIVE INCOME, NET OF TAX	1,189	(2,128)	1,195
COMPREHENSIVE INCOME	15,931us-gaap_ComprehensiveIncomeNetOfTax	10,482us-gaap_ComprehensiveIncomeNetOfTax	9,730us-gaap_ComprehensiveIncomeNetOfTax
Green Bancorp, Inc.
Condensed Statements of Comprehensive Income
NET INCOME	14,743	12,610	8,535
OTHER COMPREHENSIVE INCOME BEFORE TAX:
Change in unrealized gain (loss) on securities availableforsale	1,830	(3,227)	1,810
Total other comprehensive income (loss)	1,830	(3,227)	1,810
DEFERRED TAX EXPENSE (BENEFIT) RELATED TO OTHER COMPREHENSIVE INCOME	641	(1,099)	615
OTHER COMPREHENSIVE INCOME, NET OF TAX	1,189	(2,128)	1,195
COMPREHENSIVE INCOME	$ 15,932	$ 10,482	$ 9,730

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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