Stock Compensation Plans (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Fully vested and outstanding options
Shares outstanding beginning balance	1,028
Exercised, shares	(602)
Expired, Shares	(127)
Shares outstanding ending balance	299	1,028
Shares fully vested, exercisable options	299
Weighted average exercise price beginning balance	$ 2.66
Weighted average exercise price, Exercised	$ 2.78
Weighted average exercise price, Expired	$ 2.51
Weighted average exercise price ending balance	$ 2.49	$ 2.66
Weighted average exercise price fully vested, exercisable options	$ 2.49
Weighted average remaining term (Years) beginning balance	1 year	1 year 18 days
Weighted average remaining term (Years) ending balance	1 year	1 year 18 days
Weighted average remaining term (Years) fully vested, exercisable options	1 year
Aggregate intrinsic value beginning balance	$ 3,968
Aggregate intrinsic value, Exercised	3,146	1,094	2
Aggregate intrinsic value ending balance	1,695	3,968
Aggregate intrinsic value fully vested, exercisable options	$ 1,695

The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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