Accumulated Other Comprehensive Loss (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, beginning of period	$ (18,820,000)	$ (14,463,000)	$ (20,799,000)	$ (13,993,000)
Other comprehensive income (loss) before reclassifications	3,879,733	(1,390,000)	5,858,885	(1,860,000)
Net current-period other comprehensive income (loss)	3,879,733	(1,390,000)	5,858,885	(1,860,000)
Balance, end of period	$ (14,940,000)	$ (15,853,000)	$ (14,940,000)	$ (15,853,000)