SHAREHOLDERS' EQUITY - Additional Information (Details)	12 Months Ended
	Dec. 31, 2016 board_member $ / shares shares	Dec. 31, 2015 $ / shares shares	Dec. 31, 1995 shares
Class Of Stock [Line Items]
Preferred Stock, shares authorized ( in shares)	5,000,000	5,000,000
Number of board members elected by class A shareholders | board_member	2
Common stock voting rights	Each share of the Company’s common stock entitles the holder to one vote on all matters to be voted upon by the shareholders.
Common Stock, shares authorized (in shares)	100,000,000	100,000,000
Common Stock, par value (in dollars per share) | $ / shares	$ 0.01	$ 0.01
Common Stock, shares issued (in shares)	48,270,990	48,132,223
Common Stock, shares outstanding (in shares)	46,913,127	46,774,360
Series A Nonconvertible Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred Stock, shares issued (in shares)	200,000	200,000	200,000
Preferred Stock, liquidation value per share (in dollars per share) | $ / shares	$ 7.50	$ 7.50
Preferred stock voting rights	Holders of the Series A shares are entitled to one vote per share on matters which shareholders are generally entitled to vote.
Preferred Stock, shares outstanding (in shares)	200,000	200,000