Organization and Summary of Significant Accounting Policies - Narrative (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) segment	Dec. 31, 2019 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of reportable segments | segment	2
Warranty period	1 year
Corporate owned life insurance policies fair value	$ 3,523	$ 4,214
Restricted cash balance	55	56
Investment in unconsolidated affiliate	4,700
Warrants for unconsolidated affiliate	2,588
Prepaid Expenses and Other Current Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Restricted cash balance	$ 100	$ 100