SEGMENT INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net interest income (expense)	$ 29,400	$ 27,989	$ 56,861	$ 52,029
Provision for loan losses	458	629	1,991	1,754
Noninterest income	13,619	14,016	29,961	26,635
Noninterest expense	37,645	30,904	68,442	58,542
Income (loss) before income taxes (benefit)	4,916	10,472	16,389	18,368
Income taxes (benefit)	1,377	3,683	4,360	6,460
Net income	3,539	6,789	12,029	11,908
Total assets	4,491,642	3,021,784	4,491,642	3,021,784	$ 3,233,723
Banking
Segment Reporting Information [Line Items]
Net interest income (expense)	30,602	29,153	58,982	54,545
Provision for loan losses	458	629	1,991	1,754
Noninterest income	6,833	6,173	15,768	11,633
Noninterest expense	31,879	24,692	56,789	46,144
Income (loss) before income taxes (benefit)	5,098	10,005	15,970	18,280
Income taxes (benefit)	1,532	2,308	3,874	4,775
Net income	3,566	7,697	12,096	13,505
Total assets	4,500,790	3,022,482	4,500,790	3,022,482
Commercial FHA Origination and Servicing
Segment Reporting Information [Line Items]
Net interest income (expense)	128	349	404	497
Noninterest income	4,347	8,888	11,223	15,655
Noninterest expense	3,646	4,020	7,729	8,692
Income (loss) before income taxes (benefit)	829	5,217	3,898	7,460
Income taxes (benefit)	362	2,087	1,559	2,984
Net income	467	3,130	2,339	4,476
Total assets	92,643	145,885	92,643	145,885
Other
Segment Reporting Information [Line Items]
Net interest income (expense)	(1,330)	(1,513)	(2,525)	(3,013)
Noninterest income	2,439	(1,045)	2,970	(653)
Noninterest expense	2,120	2,192	3,924	3,706
Income (loss) before income taxes (benefit)	(1,011)	(4,750)	(3,479)	(7,372)
Income taxes (benefit)	(517)	(712)	(1,073)	(1,299)
Net income	(494)	(4,038)	(2,406)	(6,073)
Total assets	$ (101,791)	$ (146,583)	$ (101,791)	$ (146,583)