Shareholders' Equity - Restricted Stock (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock Issued During Period, Shares, Restricted Stock Award, Gross	132,726	98,383
Stock Issued During Period, Value, Restricted Stock Award, Gross	$ 469,900	$ 562,800