SUPPLEMENTAL CASH FLOW INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Cash Flow Elements [Abstract]
Cash paid for interest									$ 0	$ 0	$ 0
Cash paid for income taxes									5,137	1,692	4,369
Non cash Series A Preferred Stock accrued dividends and accretion charges	947	940	929	919	909	900	887	879	3,735	3,575	3,416
Unpaid purchases of property and equipment									$ 1,192	$ 0	$ 0