Fair Value Measurements - Additional Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 80,263	$ 100,575	$ 96,753	$ 3,044
Impairment of fixed and long lived	57,500
Government money market account
Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Cash and cash equivalents	25,100	48,400
Interest bearing demand deposit account
Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Cash and cash equivalents	45,900	45,700
Operating cash accounts
Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 9,300	$ 6,500