Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019	Nov. 15, 2013
Debt Instrument [Line Items]
Finance lease liabilities	$ 5,784,000	$ 6,248,000
Less: Deferred financing costs	(191,000)	(294,000)
Less: Current portion due within one year	(190,917,000)	(178,433,000)
Long-term portion	3,864,000	4,358,000
Secured Debt \| 2013 Term Loan Facility
Debt Instrument [Line Items]
2013 Term Loan Facility outstanding principal balance	177,286,000	177,759,000	$ 325,000,000
Less: Unamortized discount	$ (598,000)	$ (922,000)	$ (1,625,000)

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, after accumulated amortization, of debt discount.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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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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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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