Lines of Credit and Long-Term Debt - Schedule of Long-Term Debt Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term debt	$ 194,222	$ 217,991
Less current portion	421	31,670
Long-term debt, less current portion	193,801	186,321
Convertible debt
Debt Instrument [Line Items]
Long-term debt	190,367	213,771
Notes payable
Debt Instrument [Line Items]
Long-term debt	3,762	4,089
Other
Debt Instrument [Line Items]
Long-term debt	$ 93	$ 131

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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