COMMON AND PREFERRED STOCK (Details)		1 Months Ended		3 Months Ended	12 Months Ended
	Aug. 15, 2016 shares	Mar. 31, 2017 Class $ / shares shares	May 31, 2016 shares	Mar. 31, 2017 USD ($) Class $ / shares shares	Dec. 31, 2015 shares	Dec. 31, 2016 $ / shares shares	Apr. 30, 2016 shares	May 31, 2011 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage increase of authorized shares			50.00%
Common Stock, shares authorized (in shares)		142,500,000	142,500,000	142,500,000		142,500,000	95,000,000
Total shares of preferred and common stock authorized for issuance (in shares)		147,500,000		147,500,000
Number of classes of shares | Class		2		2
Common stock, par value (in dollars per share) | $ / shares		$ 0.001		$ 0.001		$ 0.001
Preferred stock, shares authorized (in shares)		5,000,000		5,000,000		5,000,000
Preferred stock, par value (in dollars per share) | $ / shares		$ 0.001		$ 0.001		$ 0.001
Stock Activity [Abstract]
Common stock surrendered by certain employees to cover tax obligations (in shares)				145,946
Fair value of common stock surrendered by certain employees to cover tax obligations | $				$ 400,000
Shares forfeited (in shares)				145,946	375,875
Stock Repurchase Program [Abstract]
Stock repurchase program, amount approved | $								$ 150,000,000
Common Stock [Member] | Chief Executive Officer [Member]
Stock Activity [Abstract]
Shares forfeited (in shares)	1,530,796	85,383