STOCK-BASED COMPENSATION PLANS - Tables (Details) - $ / shares		10 Months Ended	12 Months Ended
	Jan. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015
Number of Shares Underlying Options
Forfeited (in shares)	(17,050)
Options
Number of Shares Underlying Options
Outstanding at the beginning of period (in shares)		19,700	0	17,050
Granted (in shares)		11,850
Exercised (in shares)		(14,500)
Forfeited (in shares)				(17,050)
Outstanding and exercisable at the end of the period (in shares)		17,050		0
Weighted-average fair value per share of stock options granted during the year		$ 0.66
Weighted Average Exercise Prices
Outstanding at the beginning of the period		13.96		$ 20.46
Granted		23.16
Exercised		13.83
Forfeited				$ 20.46
Outstanding and exercisable at the end of the period		$ 20.46
Restricted share awards
Number of Shares Restricted Stock
Balance at beginning of period (in shares)			8,002	7,334
Granted (in shares)		8,000	10,176	8,000
Vested (in shares)		(666)	(7,334)	(7,332)
Balance at end of period (in shares)		7,334	10,844	8,002
Weighted Average Grant Date Fair Value Per Share
Balance at beginning of period			$ 18.27	$ 21.32
Granted		$ 21.42	18.87	17.81
Vested		22.54	18.10	17.82
Balance at end of period		$ 21.32	$ 18.75	$ 18.27