Stock Repurchases (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Oct. 24, 2017
Number of shares authorized to be repurchased	500,000		500,000
Shares repurchased	38,042	0	38,042	187,123
Remaining number of shares available for repurchase	461,958		461,958
Subsequent Event [Member]
Remaining number of shares available for repurchase					500,000