Long Term Debt - Term Loan Interest Expense (Details) - Term loan - BT Loan Agreement - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2019
Debt Instrument [Line Items]
Interest expense - stated interest rate	$ 2,024	$ 2,417
Interest expense - amortization of original issue discount	158	189
Interest expense - amortization of deferred financing costs	478	563
Total term loan interest expense	$ 2,660	$ 3,169

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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Amount of amortization expense attributable to debt issuance costs.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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