Debt - Long-term Debt (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term debt, gross	$ 314,875	$ 359,080
Less: Unamortized debt issuance costs	1,794	2,208
Total debt	313,081	356,872
Less: Current portion of long-term debt, including unamortized debt issuance costs, net	32,142	35,080
Long-term debt, less current maturities	280,939	321,792
Canadian term loan, which matures on November 30, 2021; 3.125% of aggregate principal repayable per quarter; weighted average interest rate of 5.2% for the three-month period ended March 31, 2020 (1)
Debt Instrument [Line Items]
Canadian term loan	$ 197,862	224,963
Stated interest rate	3.125%
Weighted average interest rate of term loan	5.20%
U.S. revolving credit facility, which matures on November 30, 2021), weighted average interest rate of 7.2% for the three-month period ended March 31, 2020 (1)
Debt Instrument [Line Items]
Revolving credit facility	$ 0	0
Interest rate on line of credit facility	7.20%
Canadian revolving credit facility, which matures on November 30, 2021, weighted average interest rate of 5.3% for the three-month period ended March 31, 2020 (1)
Debt Instrument [Line Items]
Revolving credit facility	$ 117,013	134,117
Interest rate on line of credit facility	5.30%
Australian revolving credit facility, which matures on November 30, 2021, weighted average interest rate of 4.5% for the three-month period ended March 31, 2020 (1)
Debt Instrument [Line Items]
Revolving credit facility	$ 0	$ 0
Interest rate on line of credit facility	4.50%

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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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Weighted average interest rate of debt outstanding.

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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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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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The effective interest rate during the reporting period.

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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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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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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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