Income Taxes - Components (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Components of income tax expense (benefit)
Current income tax provision	$ 13,723	$ 7,970	$ 7,446
Deferred income tax expense (benefit)	(3,409)	395	(540)
Income Tax Expense (Benefit), Total	10,314	8,365	6,906
Green Bancorp, Inc.
Components of income tax expense (benefit)
Deferred income tax expense (benefit)	(18)	17	14
Income Tax Expense (Benefit), Total	$ (925)	$ (654)	$ (346)