Financial Instruments - Summary of Outstanding Interest Rate Swaps (Detail) - Interest Rate Swap [Member] - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Notional Amount	$ 50,000,000
Other Current Liability [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	35,000,000
Fair Value	(178,000)
Other Non-current Liability [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	35,000,000	$ 45,000,000
Fair Value	(1,706,000)	(591,000)
Other Non-Current Assets [Member]
Derivatives, Fair Value [Line Items]
Fair Value	492,000
Notional Amount	$ 50,000,000
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Fair Value		66,000
Notional Amount		$ 25,000,000