Earnings per Share (Detail Textuals)	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Earnings Per Share [Abstract]
Special stock dividend, payment date	Jul. 01, 2016
Special stock dividend, rate percent	4.00%	4.00%	4.00%
Special stock dividend, record date	Jun. 15, 2016