Debt and Financing Arrangements - Classification of the Company Lease Obligations (Detail) - Lease Obligations [Member] - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Operating Lease Obligations:
Other Current Liabilities (current portion)	$ 1,500	$ 1,200
Other Noncurrent Liabilities (long-term portion)	3,700	2,800
Total Operating Lease Obligations	5,210	4,000
Capital Lease Obligations:
Other Current Liabilities (current portion)	200	200
Other Noncurrent Liabilities (long-term portion)	200	300
Total Capital Lease Obligations	424	500
Total Lease Obligations	$ 5,600	$ 4,500