Credit Facilities - Principal Maturities of Long-term Debt (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Debt Instrument [Line Items]
2019	$ 0
2020	84,500
2021	40,768
2022	61,408
2023	65,689
Long-term debt	252,365
Term loan facility
Debt Instrument [Line Items]
2019	0
2020	0
2021	40,768
2022	61,408
2023	61,408
Long-term debt	163,584
Convertible senior notes
Debt Instrument [Line Items]
2019	0
2020	84,500
2021	0
2022	0
2023	0
Long-term debt	84,500
Other debt
Debt Instrument [Line Items]
2019	0
2020	0
2021	0
2022	0
2023	4,281
Long-term debt	$ 4,281

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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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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 fifth 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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