TRUST PREFERRED DEBNTURES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Jun. 05, 2013	Jun. 07, 2007	Nov. 30, 2006	Mar. 26, 2004
TRUST PREFERRED DEBENTURES
Trust preferred debentures	$ 37,496	$ 37,405
Trust preferred debentures maturing January 23, 2034
TRUST PREFERRED DEBENTURES
Trust preferred debentures	$ 2,012	$ 1,996
Trust preferred debentures maturing January 23, 2034 | Grant Park Trust
TRUST PREFERRED DEBENTURES
Face amount			$ 3,000
Trust preferred debentures maturing January 23, 2034 | Grant Park Trust | LIBOR
TRUST PREFERRED DEBENTURES
Variable interest rate (as a percent)	2.85%
Interest rate (as a percent)	3.89%	3.74%
Trust preferred debentures maturing April 23, 2034
TRUST PREFERRED DEBENTURES
Trust preferred debentures	$ 9,957	$ 9,957
Trust preferred debentures maturing April 23, 2034 | Midland Trust
TRUST PREFERRED DEBENTURES
Face amount						$ 10,000
Trust preferred debentures maturing April 23, 2034 | Midland Trust | LIBOR
TRUST PREFERRED DEBENTURES
Variable interest rate (as a percent)	2.75%
Interest rate (as a percent)	3.79%	3.63%
Trust preferred debentures maturing December 31, 2036
TRUST PREFERRED DEBENTURES
Trust preferred debentures	$ 13,178	$ 13,141
Trust preferred debentures maturing December 31, 2036 | LSHC Trust III
TRUST PREFERRED DEBENTURES
Face amount					$ 20,000
Trust preferred debentures maturing December 31, 2036 | LSHC Trust III | LIBOR
TRUST PREFERRED DEBENTURES
Variable interest rate (as a percent)	1.75%
Interest rate (as a percent)	2.88%	2.71%
Trust preferred debentures maturing September 6, 2037
TRUST PREFERRED DEBENTURES
Trust preferred debentures	$ 12,349	$ 12,311
Trust preferred debentures maturing September 6, 2037 | LSHC Trust IV
TRUST PREFERRED DEBENTURES
Face amount				$ 20,000
Trust preferred debentures maturing September 6, 2037 | LSHC Trust IV | LIBOR
TRUST PREFERRED DEBENTURES
Variable interest rate (as a percent)	1.47%
Interest rate (as a percent)	2.57%	2.42%