Employee Benefit Plans (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Employee Benefit Plans [Abstract]
Company's matching percentage of employees' contribution	40.00%	40.00%	40.00%
Company's matching contribution of employees' salary	5.00%	5.00%	5.00%
Company's total contributions	$ 573,000	$ 553,000	$ 541,000