Employee Benefit Plan (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 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	$ 126,000	$ 130,000	$ 261,000	$ 255,000