Employee Benefit Plan (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Employee Benefit Plan (Textual) [Abstract]
Maximum tax deferred contributed by employees			$ 17,000
Portion of matching eligible compensation contributed to the plan by employer, First			100.00%
Percentage of eligible compensation contributed to the plan by employees, First			3.00%
Portion of matching eligible compensation contributed to the plan by employer, Second			50.00%
Percentage of eligible compensation contributed to the plan by employees, Second			2.00%
Company's contributions to the plan	$ 131,000	$ 136,000	$ 392,000	$ 391,000