Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Operating Loss Carryforwards [Line Items]
Alternative minimum tax credit carryforward	$ 21,000
Provision at statutory tax rate	34.00%	34.00%
Unrecognized tax benefits	$ 0	$ 0
Expected increase of unrecognized tax benefits in next 12 months	0
Federal Tax Authority
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 313,000