Derivative Instruments and Hedging Activities - Fair Value of Company's Derivative Financial Instruments Classification in Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Derivatives Fair Value [Line Items]
Liability Derivatives Fair Value	$ 2,156
Asset Derivatives Fair Value		$ 3,109
Other Liabilities [Member]
Derivatives Fair Value [Line Items]
Liability Derivatives Fair Value	2,200
Other Assets [Member]
Derivatives Fair Value [Line Items]
Asset Derivatives Fair Value		3,100
Interest Rate Swaps [Member] | Other Liabilities [Member]
Derivatives Fair Value [Line Items]
Liability Derivatives Fair Value	$ 2,156
Interest Rate Swaps [Member] | Other Assets [Member]
Derivatives Fair Value [Line Items]
Asset Derivatives Fair Value		$ 3,109