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Cash and Cash Equivalents and Fair Value of Financial Instruments - Narrative (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2016
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 127,210,000	$ 67,192,000
Interest Rate Swap
Cash and Cash Equivalents [Line Items]
Notional amount			$ 100,000,000.0
Fixed interest rate			0.80%
Fair value of derivative		$ 562,000
Interest Rate Swap \| LIBOR
Cash and Cash Equivalents [Line Items]
Variable rate floor			0.00%