Equity-Based Compensation (Details) - Restricted stock	12 Months Ended
	Dec. 31, 2016 USD ($) director shares
Equity-based compensation
Number of independent directors | director	3
Quarterly vesting period (in years)	2 years
Equity-based compensation expense | $	$ 66,354
Shares granted (shares) | shares	16,875
Class A common
Equity-based compensation
Cumulative shares granted (shares) | shares	22,500
Aggregate value of stock granted | $	$ 200,000