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Stock-Based Compensation (Details) (Restricted Stock, USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Restricted Stock
Stock-Based Compensation
Weighted average value (in dollars per share)			$ 7.13
Number of shares granted having performance based vesting conditions			30,000
Service period over which value of the shares are amortized to compensation expense			3 years
Number of Shares
Outstanding at beginning of period (in shares)			283,608
Granted (in shares)			134,150
Forfeited (in shares)			(1,398)
Vested (in shares)			(159,236)
Outstanding at end of period (in shares)	257,124		257,124
Compensation expense, net of forfeitures	$ 160,000	$ 191,000	$ 446,000	$ 514,000

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