Earnings per Share (Detail Textuals)	6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Earnings Per Share [Abstract]
Special stock dividend, payment date	Jul. 01, 2016
Common stock, dividend rate, percentage	4.00%	4.00%	4.00%
Special stock dividend, record date	Jun. 15, 2016