COMMON STOCK - Follow-on and Secondary Offerings (Details) - Common shares $ / shares in Units, $ in Thousands	1 Months Ended
	Jan. 01, 2017 USD ($) item $ / shares shares	Oct. 02, 2016 USD ($) $ / shares shares
Follow-on Public Offering
Public Offerings
Proceeds from issuance of common stock, net | $		$ 0
Offering costs, aggregate | $		$ 254
Follow-on Public Offering | Selling Stockholders
Public Offerings
Shares sold by selling stockholders		4,600,000
Public offering price per share | $ / shares		$ 10.25
Secondary Public Offerings
Public Offerings
Number of secondary offerings | item	2
Proceeds from issuance of common stock, net | $	$ 0
Offering costs, aggregate | $	$ 181
Secondary Public Offerings | Selling Stockholders
Public Offerings
Shares sold by selling stockholders	2,995,000
First Secondary Public Offering | Selling Stockholders
Public Offerings
Shares sold by selling stockholders	1,495,000
Public offering price per share | $ / shares	$ 13.35
Second Secondary Public Offering | Selling Stockholders
Public Offerings
Shares sold by selling stockholders	1,500,000
Public offering price per share | $ / shares	$ 13.45
Over-Allotment Option | Selling Stockholders
Public Offerings
Shares sold by selling stockholders	195,000	600,000