ORGANIZATION AND ACCOUNTING POLICIES - Earnings (Loss) Per Common Share (Details 5) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
ORGANIZATION AND ACCOUNTING POLICIES
Weighted average shares outstanding - basic	82,128,892	76,541,400
Incremental shares issuable from dilutive stock options		144,111
Weighted average shares outstanding - diluted	82,128,892	76,685,511
Employee stock options
Antidilutive securities
Anti-dilutive securities (in shares)	3,593,589	1,245,336
Convertible Debentures
Antidilutive securities
Anti-dilutive securities (in shares)	32,720	32,720
Percentage of principal amount at which debentures may be converted from the date of issuance until maturity into common stock	100.00%	100.00%
Conversion price (in dollars per share)	$ 50.00
Convertible Debentures | Minimum
Antidilutive securities
Conversion price (in dollars per share)		$ 35.00
Convertible Debentures | Maximum
Antidilutive securities
Conversion price (in dollars per share)		$ 50.00
Preferred stock
Antidilutive securities
Anti-dilutive securities (in shares)	5,352	5,352
Percentage of redemption price amount from the date of issuance until redemption that may be converted	100.00%
Preferred stock | Minimum
Antidilutive securities
Number of common shares into which one share of preferred stock is to be converted	0.5
Preferred stock | Maximum
Antidilutive securities
Number of common shares into which one share of preferred stock is to be converted	1
Restricted Stock
Antidilutive securities
Anti-dilutive securities (in shares)	1,277,468	689,370