Stock Options (Details 2) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Number of Options
Outstanding at beginning of year (in shares)	2,779	2,691
Granted at price = market value (in shares)	219	223
Granted at price > market value (in shares)	75	105
Exercised (in shares)		(230)
Forfeited (in shares)	(3)
Expired (in shares)	(25)	(10)
Outstanding at end of year (in shares)	3,045	2,779
Options exercisable at end of year (in shares)	2,396	2,012
Weighted Average Exercise Price
Outstanding at beginning of year (in dollars per share)	$ 0.78	$ 0.77
Granted at price = market value (in dollars per share)	$ 0.51	$ 0.65
Granted at price > market value (in dollars per share)	$ 0.53	$ 0.72
Exercised (in dollars per share)		$ 0.33
Forfeited (in dollars per share)	$ 0.48
Expired (in dollars per share)	$ 1.99	$ 5.21
Outstanding at end of year (in dollars per share)	$ 0.74	$ 0.78
Options exercisable at end of year (in dollars per share)	$ 0.78	$ 0.84