Shareholders' Equity (Details) - USD ($)			9 Months Ended	16 Months Ended
	Jul. 14, 2016	Jun. 15, 2016	Sep. 30, 2017	Sep. 30, 2017
Stock Repurchase Program [Abstract]
Stock repurchase program authorized amount			$ 14,500,000	$ 14,500,000
Additional amount approved	$ 4,500,000	$ 2,000,000
Treasury stock shares acquired (in shares)			21,400
Amount paid to repurchase shares during the year			$ 397,000
Amount of common stock repurchased				$ 12,300,000
Number of common stock acquired (in shares)			1,080,000	1,080,000
Number of shares issued to management (in shares)			11,000