Organization and Summary of Significant Accounting Policies (Details) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Denominator:
Weighted average common shares for basic earnings per share	17,012,560	17,605,290	17,805,464
Effect of dilutive securities	55,033	78,641	94,908
Denominator for diluted earnings per share	17,067,593	17,683,931	17,900,372