Debt - Estimated Maturities on Long-Term Debt (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Maturities on Long-Term Debt
2020	$ 10,313
2021	244,062
2022	15,000
2023	97,500
Total	366,875
Senior Convertible Notes 2016
Maturities on Long-Term Debt
2021	230,000
Total	230,000
Term Loan \| 2018 Credit Agreement
Maturities on Long-Term Debt
2020	10,313
2021	14,062
2022	15,000
2023	97,500
Total	$ 136,875

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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