Organization and Summary of Significant Accounting Policies (Details) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Denominator:
Weighted average common shares for basic earnings per share	16,345,679	17,012,560	17,605,290
Effect of dilutive securities		55,033	78,641
Denominator for diluted earnings per share	16,345,679	17,067,593	17,683,931