Stockholder's Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Stock options activity
Options outstanding, Beginning Balance	15,000
Options granted, Number of Shares
Options Exercised, Number of shares
Options forfeited or expired, Number of shares
Options outstanding, Ending Balance	15,000	15,000
Options exercisable, Number of Shares	15,000
Options Outstanding, Weighted Average Exercise Price, Beginning Balance	$ 16.88
Options granted, Weighted Average Exercise Price
Options Exercised, Weighted Average Exercise Price
Options forfeited or expired, Weighted Average Exercise Price
Options Outstanding, Weighted Average Exercise Price, Ending Balance	$ 16.88	$ 16.88
Options exercisable, Weighted Average Exercise Price	$ 16.88
Options outstanding, Average Remaining Contractual Term	3 years	4 years
Options exercisable, Average Remaining Contractual Term	3 years
Beginning balance, Aggregate Intrinsic Value
Ending balance, Aggregate Intrinsic Value
Options exercisable, Aggregate intrinsic value, Ending balance	$ 66,375