6. Stockholders’ Equity (Details Narrative) - shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Stockholders Equity Details Narrative
Stock repurchase program, shares authorized to be repurchased	250,000
Stock repurchase program, shares remained eligible for repurchase	231,765
Stock repurchase program, number of shares repurchased	0	3,427	89,452