SHAREHOLDERS' EQUITY - Additional Information (Details)		12 Months Ended
	Feb. 21, 2019 $ / shares	Dec. 31, 2018 USD ($) board_member $ / shares shares	Dec. 31, 2017 $ / shares shares	Jun. 21, 2018 shares	Jun. 20, 2018 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, shares authorized (in shares)		200,000,000	200,000,000	200,000,000	100,000,000
Common Stock, shares issued (in shares)		48,681,524	48,476,034
Common Stock, shares outstanding (in shares)		47,319,887	47,118,171
Treasury stock repurchased shares		3,774
Treasury stock aggregate purchase price value | $		$ 477,000
Common stock dividends declared per share | $ / shares		$ 0.24	$ 0.12
Common stock dividends paid per share | $ / shares		$ 0.24
Common stock dividends paid | $		$ 11,300,000
Subsequent Event [Member]
Class Of Stock [Line Items]
Common stock dividends declared per share | $ / shares	$ 0.10
Dividend declared date	Feb. 21, 2019
Dividend payable date	Mar. 29, 2019
Dividend record date	Mar. 15, 2019
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