Debt and Financing Arrangements - Summary of Recognized Interest Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Debt Instrument [Line Items]
Total interest expense	$ 2,074	$ 1,587	$ 3,193	$ 2,988
2018 Credit Facility [Member]
Debt Instrument [Line Items]
Total interest expense	2,056	1,564	3,157	2,946
Other Line of Credit [Member]
Debt Instrument [Line Items]
Total interest expense			1
Other [Member]
Debt Instrument [Line Items]
Total interest expense	$ 18	$ 23	$ 35	$ 42