SIGNIFICANT ACCOUNTING POLICIES - Reverse Stock Split (Details)		1 Months Ended
	Jun. 07, 2016 shares	May 31, 2016
Class of Stock [Line Items]
Fractional shares issued	0
Common Class A
Class of Stock [Line Items]
Conversion ratio	0.1
Common Class B
Class of Stock [Line Items]
Conversion ratio	0.1
Minimum | Common Class A
Class of Stock [Line Items]
Conversion ratio		0.2
Minimum | Common Class B
Class of Stock [Line Items]
Conversion ratio		0.2
Maximum | Common Class A
Class of Stock [Line Items]
Conversion ratio		0.04
Maximum | Common Class B
Class of Stock [Line Items]
Conversion ratio		0.04