PARENT COMPANY FINANCIAL DATA Condensed Statements of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income:
Dividends from subsidiaries	$ 178,703	$ 134,548	$ 79,090
Expense:
Interest expense	19,553	13,980	8,653
Other expenses	15,290	12,087	8,322
Income before income taxes	70,622	27,118	7,887
Income tax benefit	(25,995)	(5,413)	(2,014)
Net income	44,627	21,705	5,873
Dividends on preferred stock	822	1,269	0
Net income attributable to non-controlling interests	0	2,466	3,601
Net income available to common shareholders	43,805	17,970	2,272
Parent Company
Income:
Dividends from subsidiaries	40,108	8,058	0
Other income	105	54	0
Total income	40,213	8,112	0
Expense:
Interest expense	3,754	2,331	0
Other expenses	1,465	837	1,247
Total expenses	5,219	3,168	1,247
Income before income taxes	34,994	4,944	(1,247)
Income tax benefit	1,744	5,647	0
Income (loss) before equity in undistributed earnings of subsidiaries	36,738	10,591	(1,247)
Equity in undistributed earnings of subsidiaries	7,889	11,114	7,120
Net income	44,627	21,705	5,873
Dividends on preferred stock	822	1,269	0
Net income attributable to non-controlling interests	0	2,466	3,470
Net income available to common shareholders	$ 43,805	$ 17,970	$ 2,403