CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive income (loss)
Balance at Dec. 31, 2012	$ 285,272	$ 433	$ 493,175	$ (208,246)	$ (90)
Balance (in shares) at Dec. 31, 2012		43,265,833
Increase (Decrease) in Stockholders' Equity
Stock compensation accrued	1,474	2	1,472
Stock compensation accrued (in shares)		265,000
Realized gain on marketable equity securities, net of tax	90				90
Net loss	(240,380)			(240,380)
Balance at Dec. 31, 2013	46,456	435	494,647	(448,626)
Balance (in shares) at Dec. 31, 2013		43,530,833
Increase (Decrease) in Stockholders' Equity
Stock compensation accrued	330		330
KELTIP mark-to-market	(64)		(64)
Net loss	(5,658)			(5,658)
Balance at Mar. 31, 2014	$ 41,064	$ 435	$ 494,913	$ (454,284)
Balance (in shares) at Mar. 31, 2014		43,530,833