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Stock-Based Compensation (Details 6) (Restricted Stock Awards [Member], USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Restricted Stock Awards [Member]
Schedule of restricted stock awards activity
Beginning outstanding balance	44,000	18,000
Awarded	0	57,750
Released	0	(31,750)
Forfeited	0	0
Ending outstanding balance	44,000	44,000
Weighted average grant date fair value of restricted stock awarded	$ 0.00	$ 5.70
Total fair value of restricted stock awards released	$ 0	$ 171,000

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

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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