General (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Class of Warrant or Right [Line Items]
Reverse stock split ratio	one-for-sixteen (1:16)	one-for-sixteen (1:16)	one-for-sixteen (1:16)
Common stock, shares authorized (in shares)	170,000,000		170,000,000
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Minimum [Member]
Class of Warrant or Right [Line Items]
Reverse stock split ratio	one-for-eight (1:8)
Maximum [Member]
Class of Warrant or Right [Line Items]
Reverse stock split ratio	one-for- sixteen (1:16)