Financial Instruments and Fair Value Measurements - Fair Value Measurements for Assets and Liabilities at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financial liabilities
Interest rate swap		$ 4,059
Fair Value, Measurements, Recurring
Financial assets
Interest rate swap		1,683
Financial liabilities
Interest rate swap	$ 14,452
Fair Value, Measurements, Recurring | Level 1
Financial assets
Interest rate swap		0
Financial liabilities
Interest rate swap	0	0
Fair Value, Measurements, Recurring | Level 2
Financial assets
Interest rate swap		1,683
Financial liabilities
Interest rate swap	14,452	4,059
Fair Value, Measurements, Recurring | Level 3
Financial assets
Interest rate swap		0
Financial liabilities
Interest rate swap	$ 0	$ 0