STOCK-BASED COMPENSATION - Summary of Non-Vested Options for Non-Qualified, Equity-Classified Stock Option Awards (Details)	6 Months Ended
	Jun. 30, 2017 USD ($) shares
Stock-based compensation
Total intrinsic value of options exercised (in dollars) | $	$ 52,000
2010 Plan | Non-Qualified Stock Option Award
Non-Vested Shares
Outstanding (in shares) | shares	36,900
Vested (in shares) | shares	(16,500)
Outstanding (in shares) | shares	20,400
Stock-based compensation
Fair Value of Shares Vested | $	$ 924,066
Unrecognized compensation cost (in dollars) | $	$ 213,000
Weighted average period of recognition of unrecognized compensation cost	9 months 18 days