CONTANGO MERGER (Details) (USD $) In Millions, except Share data, unless otherwise specified	Jun. 30, 2013	Apr. 29, 2013	Dec. 31, 2012
CONTANGO MERGER
Common stock, par value (in dollars per share)	$ 0.001		$ 0.001
Amount payable for expense reimbursement if stockholder approval is not obtained		$ 4.5
Contango
CONTANGO MERGER
Common stock, par value (in dollars per share)	$ 0.04
Termination fee payable		28.0
Crimson
CONTANGO MERGER
Common stock, par value (in dollars per share)	$ 0.001
Termination fee payable		$ 7.0
Crimson | Contango | Scenario forecast
CONTANGO MERGER
Number of shares of common stock to be received for each share owned as consideration		0.08288