Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Allowance for credit losses	$ 11,531	$ 5,462
Acquired loan valuation allowance	8,883	1,415
Real estate acquired by foreclosure write-downs	2,695	609
Net operating loss carryforward	1,755	1,862
Acquired deposit valuation allowance	1,631	392
Nonqualified stock options	1,464	1,229
Pre-opening expenses	144	167
Other	1,031	437
Total deferred tax assets	29,134	11,573
Deferred tax liabilities:
Goodwill and core deposit intangibles	4,532	1,630
Acquired subordinated debentures valuation allowance	3,143
Acquired investments valuation allowance	688
Deferred loan costs	603	658
Depreciable assets	381	239
Unrealized gain on available-for-sale securities	225	572
Other	52	6
Total deferred tax liabilities	9,624	3,105
Deferred Tax Assets, Net, Total	$ 19,510	8,468
Green Bancorp, Inc.
Deferred tax liabilities:
Deferred Tax Assets, Net, Total		$ 124