BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Initial Public Offering (Details) - Common shares $ / shares in Units, $ in Thousands		6 Months Ended
	Jul. 22, 2015 $ / shares shares	Dec. 27, 2015 USD ($)
Initial Public Offering
Stock split, conversion ratio	11.139
IPO
Initial Public Offering
Public offering price per share | $ / shares	$ 15.00
Proceeds from issuance of common stock, net		$ 81,762
Underwriting discounts and commissions		6,375
Offering expenses of IPO		2,934
Offering expenses		$ 827
IPO, excluding over-allotment options
Initial Public Offering
Shares sold | shares	6,071,429
Over-Allotment Option
Initial Public Offering
Shares sold | shares	910,714