Stock Option Plans (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Plan 1994 [Member]
Shares under option:
Options outstanding-Shares	0	7
Granted-Shares	0	0
Exercised - Shares	0	0
Forfeited-Shares	0	(7)
Options outstanding-Shares	0	0
Options Exercisable-Shares	0
Options outstanding-Weighted Average Exercise Price	$ 0	$ 2.88
Granted-Weighted Average Exercise Price	$ 0	$ 0
Exercised-Weighted Average Exercise Price	$ 0	$ 0
Forfeited-Weighted Average Exercise Price	$ 0	$ 2.88
Options outstanding-Weighted Average Exercise Price	$ 0	$ 0
Options exercisable-Weighted Average Exercise Price	$ 0	$ 0
Weighted-average fair value of options granted during:
Weighted-average fair value of options granted	$ 0	$ 0
Plan 1995 [Member]
Shares under option:
Options outstanding-Shares	277	408
Granted-Shares	0	0
Exercised - Shares	0	0
Forfeited-Shares	(216)	(131)
Options outstanding-Shares	61	277
Options Exercisable-Shares	61
Options outstanding-Weighted Average Exercise Price	$ 3.54	$ 3.39
Granted-Weighted Average Exercise Price	$ 0	$ 0
Exercised-Weighted Average Exercise Price	$ 0	$ 0
Forfeited-Weighted Average Exercise Price	$ 3.45	$ 3.08
Options outstanding-Weighted Average Exercise Price	$ 3.84	$ 3.54
Options exercisable-Weighted Average Exercise Price	$ 3.84
Weighted-average fair value of options granted during:
Weighted-average fair value of options granted	$ 0	$ 0
Plan 1996 [Member]
Shares under option:
Options outstanding-Shares	80	100
Granted-Shares	0	0
Exercised - Shares	0	0
Forfeited-Shares	(50)	(20)
Options outstanding-Shares	80	80
Options Exercisable-Shares	30
Options outstanding-Weighted Average Exercise Price	$ 3.10	$ 3.06
Granted-Weighted Average Exercise Price	$ 0	$ 0
Exercised-Weighted Average Exercise Price	$ 0	$ 0
Forfeited-Weighted Average Exercise Price	$ 3.16	$ 2.88
Options outstanding-Weighted Average Exercise Price	$ 3.00	$ 3.10
Options exercisable-Weighted Average Exercise Price	$ 3.00
Weighted-average fair value of options granted during:
Weighted-average fair value of options granted	$ 0	$ 0
Employee Plan 2005 [Member]
Shares under option:
Options outstanding-Shares	1,001	810
Granted-Shares	288	245
Exercised - Shares	0	(18)
Forfeited-Shares	(64)	(36)
Options outstanding-Shares	1,225	1,001
Options Exercisable-Shares	784
Options outstanding-Weighted Average Exercise Price	$ 1.86	$ 1.86
Granted-Weighted Average Exercise Price	$ 1.05	$ 1.93
Exercised-Weighted Average Exercise Price	$ 0	$ 1.80
Forfeited-Weighted Average Exercise Price	$ 1.88	$ 2.50
Options outstanding-Weighted Average Exercise Price	$ 1.67	$ 1.86
Options exercisable-Weighted Average Exercise Price	$ 1.85
Weighted-average fair value of options granted during:
Weighted-average fair value of options granted	$ 0.72	$ 0
Director Plan 2005 [Member]
Shares under option:
Options outstanding-Shares	277	247
Granted-Shares	52	50
Exercised - Shares	0	0
Forfeited-Shares	(80)	(20)
Options outstanding-Shares	249	277
Options Exercisable-Shares	197
Options outstanding-Weighted Average Exercise Price	$ 1.51	$ 1.44
Granted-Weighted Average Exercise Price	$ 1.05	$ 1.93
Exercised-Weighted Average Exercise Price	$ 0	$ 0
Forfeited-Weighted Average Exercise Price	$ 1.55	$ 1.63
Options outstanding-Weighted Average Exercise Price	$ 1.40	$ 1.51
Options exercisable-Weighted Average Exercise Price	$ 1.50
Weighted-average fair value of options granted during:
Weighted-average fair value of options granted	$ 0.72	$ 0.88