Stockholders' Equity and Stock Based Compensation (Details3) (USD $)	6 Months Ended
Jun. 30, 2012	Jun. 30, 2011
Weighted Average Grant Date Fair Value
Share-based compensation cost (in dollars)	$ 463,000	$ 589,000
2006 Plan \| Restricted stock awards
Shares
Nonvested shares at the beginning of the period	262,275
Vested (in shares)	(46,700)
Nonvested shares at the end of the period	215,575
Weighted Average Grant Date Fair Value
Nonvested shares at the beginning of period (in dollars per share)	$ 10.44
Vested (in dollars per share)	$ 9.91
Nonvested shares at the end of period (in dollars per share)	$ 10.55
Unrecognized compensation cost (in dollars)	$ 2,300,000
Weighted average period for recognition of unrecognized compensation cost	3 years 1 month 6 days

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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