Fair Value Measurements - Schedule of Fair Value Information for Financial Liabilities Carried on Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Financial Liabilities:
Revolving credit facility	$ 48,000	$ 0
Total long-term debt	184,912	208,495
Carrying Value [Member]
Financial Liabilities:
Revolving credit facility	48,000
Total long-term debt	184,910	208,493
Carrying Value [Member] | 4.75% Convertible Senior Notes [Member]
Financial Liabilities:
Total long-term debt	168,806	168,230
Carrying Value [Member] | 4.25% Convertible Senior Notes [Member]
Financial Liabilities:
Total long-term debt		23,916
Carrying Value [Member] | 4.55% Promissory Note [Member]
Financial Liabilities:
Total long-term debt	4,504	4,640
Carrying Value [Member] | 5.50% Promissory Note [Member]
Financial Liabilities:
Total long-term debt	11,600	11,707
Estimate of Fair Value Measurement [Member]
Financial Liabilities:
Revolving credit facility	48,000
Total long-term debt	240,379	265,520
Estimate of Fair Value Measurement [Member] | (Level 2) [Member]
Financial Liabilities:
Revolving credit facility	48,000
Total long-term debt	224,909	249,659
Estimate of Fair Value Measurement [Member] | (Level 3) [Member]
Financial Liabilities:
Total long-term debt	15,470	15,861
Estimate of Fair Value Measurement [Member] | 4.75% Convertible Senior Notes [Member]
Financial Liabilities:
Total long-term debt	224,909	215,114
Estimate of Fair Value Measurement [Member] | 4.75% Convertible Senior Notes [Member] | (Level 2) [Member]
Financial Liabilities:
Total long-term debt	224,909	215,114
Estimate of Fair Value Measurement [Member] | 4.25% Convertible Senior Notes [Member]
Financial Liabilities:
Total long-term debt		34,545
Estimate of Fair Value Measurement [Member] | 4.25% Convertible Senior Notes [Member] | (Level 2) [Member]
Financial Liabilities:
Total long-term debt		34,545
Estimate of Fair Value Measurement [Member] | 4.55% Promissory Note [Member]
Financial Liabilities:
Total long-term debt		4,349
Estimate of Fair Value Measurement [Member] | 4.55% Promissory Note [Member] | (Level 3) [Member]
Financial Liabilities:
Total long-term debt	4,180	4,349
Estimate of Fair Value Measurement [Member] | 4.55% Promissory Note [Member]
Financial Liabilities:
Total long-term debt	4,180
Estimate of Fair Value Measurement [Member] | 5.50% Promissory Note [Member]
Financial Liabilities:
Total long-term debt	11,290	11,512
Estimate of Fair Value Measurement [Member] | 5.50% Promissory Note [Member] | (Level 3) [Member]
Financial Liabilities:
Total long-term debt	$ 11,290	$ 11,512