Stockholders Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Stockholders Equity [Abstract]
Shares withheld for tax withholding obligations for the vesting of restricted stock awards (in shares)	105,923
Authorized to repurchased additional Shares under repurchase program (in shares)	1,236,872
Dividends declared per share of common stock (in dollars per share)	$ 0.15	$ 0.15
Dividend paid	$ 3,899	$ 3,971
Shares repurchased under the program (in shares)	0	0