Subsequent Events (Details) - Unaudited Pro Forma Combined Results of Operations (Details) - Standard Bancshares, Inc. $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Subsequent Event [Line Items]
Total revenues	$ 616,922	[1]
Net income	$ 108,770

[1] Includes net interest income and total noninterest income.