Fair Value Measurements - Additional Information (Details)	Mar. 31, 2017 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets transferred from level 1 to level 2	$ 0
Fair value, re-measured on recurring basis using significant unobservable inputs , assets value	0
Fair value, re-measured on recurring basis using significant unobservable inputs , liabilities value	0
Aggregate carrying value of debt	20,000,000
Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Aggregate carrying value of debt	20,000,000
Estimated fair value of debt	$ 20,000,000